1muttrc(5)                        User Manuals                        muttrc(5)
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NAME

6       muttrc - Configuration file for the Mutt Mail User Agent
7

DESCRIPTION

9       A  mutt  configuration  file  consists of a series of “commands”.  Each
10       line of the file may contain one or more commands.  When multiple  com‐
11       mands are used, they must be separated by a semicolon (“;”).
12
13       The  hash  mark, or pound sign (“#”), is used as a “comment” character.
14       You can use it to annotate your initialization file. All text after the
15       comment character to the end of the line is ignored.
16
17       Single  quotes  (“'”)  and  double  quotes  (“"”)  can be used to quote
18       strings which contain spaces or other special characters.  The  differ‐
19       ence between the two types of quotes is similar to that of many popular
20       shell programs, namely that a single quote is used to specify a literal
21       string (one that is not interpreted for shell variables or quoting with
22       a backslash [see next  paragraph]),  while  double  quotes  indicate  a
23       string which should be evaluated.  For example, backticks are evaluated
24       inside of double quotes, but not single quotes.
25
26       \ quotes the next character, just as in shells such as  bash  and  zsh.
27       For  example,  if  want to put quotes (“"”) inside of a string, you can
28       use “\” to force the next character to be a literal instead  of  inter‐
29       preted character.
30
31\\”  means  to insert a literal “\” into the line.  “\n” and “\r” have
32       their usual C meanings of linefeed and carriage-return, respectively.
33
34       A “\” at the end of a line can be used to split commands over  multiple
35       lines,  provided  that  the  split points don't appear in the middle of
36       command names.
37
38       It is also possible to substitute the output of a Unix  command  in  an
39       initialization  file.  This is accomplished by enclosing the command in
40       backticks (`command`).
41
42       UNIX environment variables can be accessed like the way it is  done  in
43       shells  like  sh and bash: Prepend the name of the variable by a dollar
44       (“$”) sign.
45

COMMANDS

47       alias [-group name [...]] key address [, address [ ... ]]
48       unalias [ *  | key ]
49
50              alias defines an alias key for the given addresses. Each address
51              will be resolved into either an email address (user@example.com)
52              or a named email address (User Name <user@example.com>). The ad‐
53              dress  may  be  specified  in  either  format,  or in the format
54              “user@example.com (User Name)”.  unalias removes the alias  cor‐
55              responding  to  the given key or all aliases when “*” is used as
56              an argument. The optional -group argument to  alias  causes  the
57              aliased address(es) to be added to the named group.
58
59       group [-group name] [-rx EXPR [ ... ]] [-addr address [ ... ]]
60       ungroup [-group name ] [ * | [[-rx EXPR [ ... ]] [-addr address [ ... ]]]
61
62              group  is  used  to directly add either addresses or regular ex‐
63              pressions to the specified group or groups. The different  cate‐
64              gories  of  arguments  to the group command can be in any order.
65              The flags -rx and -addr specify what the following strings (that
66              cannot  begin  with a hyphen) should be interpreted as: either a
67              regular expression or an email address,  respectively.   ungroup
68              is  used  to  remove  addresses  or regular expressions from the
69              specified group or groups. The syntax is similar  to  the  group
70              command,  however the special character * can be used to empty a
71              group of all of its contents.
72
73              These address groups can  also  be  created  implicitly  by  the
74              alias,  lists,  subscribe  and alternates commands by specifying
75              the optional -group option.
76
77              Once defined, these address groups can be used  in  patterns  to
78              search for and limit the display to messages matching a group.
79
80       alternates [-group name] regexp [ regexp [ ... ]]
81       unalternates [ *  | regexp [ regexp [ ... ]] ]
82
83              alternates  is  used  to  inform  mutt about alternate addresses
84              where you receive mail; you can use regular expressions to spec‐
85              ify  alternate  addresses.   This affects mutt's idea about mes‐
86              sages from you, and messages addressed to you.  unalternates re‐
87              moves  a  regular  expression from the list of known alternates.
88              The -group flag causes all of the subsequent regular expressions
89              to be added to the named group.
90
91       alternative_order type[/subtype] [ ... ]
92       unalternative_order [ *  | type/subtype] [...]
93
94              alternative_order  command  permits  you  to  define an order of
95              preference which is used by mutt to determine which  part  of  a
96              multipart/alternative body to display.  A subtype of “*” matches
97              any subtype, as does an empty subtype.   unalternative_order re‐
98              moves  entries  from the ordered list or deletes the entire list
99              when “*” is used as an argument.
100
101       attachments [ + | - ]disposition mime-type
102       unattachments [ + | - ]disposition mime-type
103       attachments ?
104       unattachments *
105
106              attachments specifies what kinds of  attachments  are  used  for
107              Mutt's attachment counting and searching support.
108
109              disposition  is  the attachment's Content-Disposition type - ei‐
110              ther inline or attachment. You can abbreviate this to I or A.
111
112              The first part of a message or multipart group,  if  inline,  is
113              counted  separately  than  other inline parts. Specify root or R
114              for disposition to count these as  attachments.  If  this  first
115              part  is  of type multipart/alternative, note that its top-level
116              inline  parts  are  also  counted  via  root   disposition   (if
117              $count_alternatives is set).
118
119              disposition  is  prefixed by either a + symbol or a - symbol. If
120              it's a +, you're saying that you want to allow this  disposition
121              and  MIME  type to qualify. If it's a -, you're saying that this
122              disposition and MIME type is an exception to previous + rules.
123
124              mime-type is the MIME type of the attachment you want  the  com‐
125              mand to affect. A MIME type is always of the format major/minor,
126              where major describes the  broad  category  of  document  you're
127              looking  at,  and  minor describes the specific type within that
128              category. The major part of mime-type must be literal  text  (or
129              the  special  token  *), but the minor part may be a regular ex‐
130              pression. (Therefore, */.* matches any MIME type.)
131
132              The MIME types you give to the attachments directive are a  kind
133              of pattern. When you use the attachments directive, the patterns
134              you specify are added to a list. When you use unattachments, the
135              pattern  is removed from the list. The patterns are not expanded
136              and matched to specific MIME types at this time -  they're  just
137              text  in a list. They're only matched when actually evaluating a
138              message.
139
140       auto_view type[/subtype] [ ... ]
141       unauto_view type[/subtype] [ ... ]
142
143              This commands permits you to specify that mutt should  automati‐
144              cally convert the given MIME types to text/plain when displaying
145              messages.  For this to work, there must be  a  mailcap(5)  entry
146              for the given MIME type with the copiousoutput flag set.  A sub‐
147              type of “*” matches any subtype, as does an empty subtype.
148
149       mime_lookup type[/subtype] [ ... ]
150       unmime_lookup type[/subtype] [ ... ]
151
152              This command permits you to define a list of "data" MIME content
153              types  for which mutt will try to determine the actual file type
154              from the file name, and not use a mailcap(5) entry given for the
155              original  MIME  type.   For  instance,  you may add the applica‐
156              tion/octet-stream MIME type to this list.
157
158       bind map1,map2,... key function
159              This command binds the given key for the given map  or  maps  to
160              the given function. Multiple maps may be specified by separating
161              them with commas (no whitespace is allowed).
162
163              Valid maps are: generic, alias, attach, browser, editor,  index,
164              compose, pager, pgp, postpone, mix.
165
166              For  more  information on keys and functions, please consult the
167              Mutt Manual. Note that the function  name  is  to  be  specified
168              without angle brackets.
169
170       account-hook [!]regexp command
171              This hook is executed whenever you access a remote mailbox. Use‐
172              ful to adjust configuration settings to different  IMAP  or  POP
173              servers.
174
175       charset-hook alias charset
176              This command defines an alias for a character set.  This is use‐
177              ful to properly display messages which are tagged with a charac‐
178              ter set name not known to mutt.
179
180       iconv-hook charset local-charset
181              This command defines a system-specific name for a character set.
182              This is useful when your system's iconv(3)  implementation  does
183              not  understand  MIME  character set names (such as iso-8859-1),
184              but instead insists on being  fed  with  implementation-specific
185              character  set  names  (such as 8859-1).  In this specific case,
186              you'd put this into your configuration file:
187
188              iconv-hook iso-8859-1 8859-1
189
190       message-hook [!]pattern command
191              Before mutt displays (or formats for replying or  forwarding)  a
192              message which matches the given pattern (or, when it is preceded
193              by an exclamation mark, does not match the pattern),  the  given
194              command  is  executed.   When multiple message-hooks match, they
195              are  executed  in  the order in which they occur in the configu‐
196              ration file.
197
198       folder-hook [!]regexp command
199              When  mutt enters a folder which matches regexp (or, when regexp
200              is preceded by an exclamation mark, does not match regexp),  the
201              given command is executed.
202
203              When  several  folder-hooks  match a given mail folder, they are
204              executed in the order given in the configuration file.
205
206       macro map key sequence [ description ]
207              This command binds the given sequence of keys to the  given  key
208              in  the given map or maps.  For valid maps, see bind. To specify
209              multiple maps, put only a comma between the maps.
210
211       color object [ attribute ... ] foreground background [ regexp ]
212       color index [ attribute ... ] foreground background [ pattern ]
213       color compose composeobject [ attribute ... ] foreground background
214       uncolor index pattern [ pattern ... ]
215
216              If your terminal supports color, these commands can be  used  to
217              assign  foreground/background  combinations  to certain objects.
218              Valid objects are: attachment, body, bold, error, header, hdrde‐
219              fault,  index,  indicator,  markers,  message,  normal,  prompt,
220              quoted, quotedN, search, signature, status, tilde, tree,  under‐
221              line.   If the sidebar is enabled the following objects are also
222              valid:  sidebar_divider,   sidebar_flagged,   sidebar_highlight,
223              sidebar_indicator, sidebar_new, sidebar_spoolfile.  The body and
224              header objects allow you to restrict the colorization to a regu‐
225              lar  expression.  The index object permits you to select colored
226              messages by pattern.
227
228              Valid composeobjects  include  header,  security_encrypt,  secu‐
229              rity_sign, security_both, security_none.
230
231              Valid  colors include: white, black, green, magenta, blue, cyan,
232              yellow, red, default, colorN.
233
234              Valid attributes include: none, bold,  underline,  reverse,  and
235              standout.
236
237       mono object attribute [ regexp ]
238       mono index attribute [ pattern ]
239
240              For  terminals  which  don't support color, you can still assign
241              attributes to objects.
242
243       [un]ignore pattern [ pattern ... ]
244              The ignore command permits you to specify  header  fields  which
245              you  usually  don't wish to see.  Any header field whose tag be‐
246              gins with an “ignored” pattern will be ignored.
247
248              The unignore command permits you to define exceptions  from  the
249              above mentioned list of ignored headers.
250
251       lists [-group name] regexp [ regexp ... ]
252       unlists regexp [ regexp ... ]
253       subscribe [-group name] regexp [ regexp ... ]
254       unsubscribe regexp [ regexp ... ]
255
256              Mutt  maintains  two  lists  of mailing list address patterns, a
257              list of subscribed mailing lists, and a list  of  known  mailing
258              lists.   All  subscribed  mailing lists are known.  Patterns use
259              regular expressions.
260
261              The lists command adds a mailing list address  to  the  list  of
262              known mailing lists.  The unlists command removes a mailing list
263              from the lists of known and subscribed mailing lists.  The  sub‐
264              scribe  command  adds  a  mailing list to the lists of known and
265              subscribed mailing lists.  The unsubscribe  command  removes  it
266              from  the list of subscribed mailing lists. The -group flag adds
267              all of the subsequent regular expressions to the named group.
268
269       mbox-hook [!]regexp mailbox
270              When mutt changes to a mail folder which matches regexp, mailbox
271              will  be  used as the “mbox” folder, i.e., read messages will be
272              moved to that folder when the mail folder is left.
273
274              The first matching mbox-hook applies.
275
276       mailboxes [[-notify | -nonotify]
277                  [-poll | -nopoll]
278                  [[-label label] | -nolabel]
279                  filename] [ ... ]
280       unmailboxes [ * | filename ... ]
281
282              The mailboxes specifies folders which can receive mail and which
283              will be checked for new messages.  When changing folders, press‐
284              ing space will cycle through folders with new mail.  The unmail‐
285              boxes  command  is  used  to remove a file name from the list of
286              folders which can receive mail.  If "*" is specified as the file
287              name, the list is emptied.
288
289       my_hdr string
290       unmy_hdr field
291
292              Using  my_hdr, you can define headers which will be added to the
293              messages you compose.  unmy_hdr will remove the  given  user-de‐
294              fined headers.
295
296       hdr_order header1 header2 [ ... ]
297              With  this  command, you can specify an order in which mutt will
298              attempt to present headers to you when viewing messages.
299
300       save-hook [!]pattern filename
301              When a message matches pattern, the default file name when  sav‐
302              ing it will be the given filename.
303
304       fcc-hook [!]pattern filename
305              When  an outgoing message matches pattern, the default file name
306              for storing a copy (fcc) will be the given filename.
307
308       fcc-save-hook [!]pattern filename
309              This command is an abbreviation for identical fcc-hook and save-
310              hook commands.
311
312       send-hook [!]pattern command
313              When  composing a message matching pattern, command is executed.
314              When multiple send-hooks match, they are executed in  the  order
315              in which they occur in the configuration file.
316
317       send2-hook [!]pattern command
318              Whenever  a message matching pattern is changed (either by edit‐
319              ing it or by using the compose menu), command is executed.  When
320              multiple  send2-hooks  match,  they are executed in the order in
321              which they occur in the configuration file.   Possible  applica‐
322              tions  include  setting  the $sendmail variable when a message's
323              from header is changed.
324
325              send2-hook execution is not triggered by  use  of  enter-command
326              from the compose menu.
327
328       reply-hook [!]pattern command
329              When  replying  to  a  message matching pattern, command is exe‐
330              cuted.  When multiple reply-hooks match, they  are  executed  in
331              the order in which they occur in the configuration file, but all
332              reply-hooks are matched and executed before send-hooks,  regard‐
333              less of their order in the configuration file.
334
335       crypt-hook regexp key-id
336              The  crypt-hook command provides a method by which you can spec‐
337              ify the ID of the public key to be used when encrypting messages
338              to  a certain recipient.  The meaning of "key ID" is to be taken
339              broadly: This can be a different e-mail address, a numerical key
340              ID, or even just an arbitrary search string.  You may use multi‐
341              ple crypt-hooks with the same regexp; multiple  matching  crypt-
342              hooks result in the use of multiple key-ids for a recipient.
343
344       index-format-hook name [!]pattern format-string
345              This  command  is used to inject format strings dynamically into
346              $index_format based on pattern matching against the current mes‐
347              sage.
348
349              The  $index_format  expando  %@name@ specifies a placeholder for
350              the injection. Index-format-hooks with the same name are matched
351              using  pattern  against the current message. Matching is done in
352              the order specified in the .muttrc, with the first  match  being
353              used.  The  hook's  format-string is then substituted and evalu‐
354              ated.
355
356       open-hook regexp "command"
357       close-hook regexp "command"
358       append-hook regexp "command"
359
360              These commands provide a way to handle compressed  folders.  The
361              given  regexp  specifies  which  folders are taken as compressed
362              (e.g.  "\\.gz$"). The commands tell Mutt  how  to  uncompress  a
363              folder  (open-hook),  compress a folder (close-hook) or append a
364              compressed mail to a compressed folder (append-hook).  The  com‐
365              mand  string  is the printf(3) like format string, and it should
366              accept two parameters: %f, which  is  replaced  with  the  (com‐
367              pressed)  folder name, and %t which is replaced with the name of
368              the temporary folder to which to write.
369
370       push string
371       exec function [ ... ]
372
373              push adds the named string to the keyboard buffer.  “exec  func‐
374              tion” is equivalent to “push <function>”.
375
376       run MuttLisp
377
378              The  run  command evaluates the MuttLisp argument. The output of
379              the MuttLisp is then executed as a Mutt command, as if  it  were
380              typed in the muttrc instead.
381
382       score pattern value
383       unscore [ * | pattern ... ]
384
385              The  score  commands  adds value to a message's score if pattern
386              matches it.  The unscore command removes score entries from  the
387              list.
388
389       set [no|inv|&|?]variable[=value] [ ... ]
390       toggle variable [ ... ]
391       unset variable [ ... ]
392       reset variable [ ... ]
393
394              These  commands  are  used  to  set and manipulate configuration
395              variables.
396
397              Mutt knows four  basic  types  of  variables:  boolean,  number,
398              string and quadoption.  Boolean variables can be set (true), un‐
399              set (false), or toggled. Number variables can be assigned a pos‐
400              itive integer value.
401
402              String  variables consist of any number of printable characters.
403              Strings must be enclosed in quotes if  they  contain  spaces  or
404              tabs.   You  may also use the “C” escape sequences \n and \t for
405              newline and tab, respectively.
406
407              Quadoption variables are used to control whether or  not  to  be
408              prompted for certain actions, or to specify a default action.  A
409              value of yes will cause the action to be carried  out  automati‐
410              cally  as if you had answered yes to the question.  Similarly, a
411              value of no will cause the action to be carried out  as  if  you
412              had answered “no.” A value of ask-yes will cause a prompt with a
413              default answer of “yes” and ask-no will provide a default answer
414              of “no.”
415
416              The reset command resets all given variables to the compile time
417              defaults.  If you reset the special variable all, all  variables
418              will reset to their compile time defaults.
419
420       setenv [?]variable [ value ]
421       unsetenv variable
422
423              These  alter  the  environment  that Mutt passes on to its child
424              processes.  You can also query  current  environment  values  by
425              prefixing a “?” character.
426
427       sidebar_whitelist mailbox [ mailbox ...]
428       unsidebar_whitelist [ * | mailbox ... ]
429
430              sidebar_whitelist  specifies  mailboxes that will always be dis‐
431              played in the sidebar, even if $sidebar_new_mail_only is set and
432              the mailbox does not contain new mail.
433
434              unsidebar_whitelist is used to remove a mailbox from the list of
435              whitelisted mailboxes. Use unsidebar_whitelist * to  remove  all
436              mailboxes.
437
438       source filename
439              The given file will be evaluated as a configuration file.
440
441       spam pattern format
442       nospam pattern
443
444              These commands define spam-detection patterns from external spam
445              filters, so that mutt can sort,  limit,  and  search  on  ``spam
446              tags'' or ``spam attributes'', or display them in the index. See
447              the Mutt manual for details.
448
449       subjectrx pattern replacement
450       unsubjectrx [ * | pattern ]
451
452              subjectrx specifies a regular expression pattern which,  if  de‐
453              tected  in  a message subject, causes the subject to be replaced
454              with the replacement value. The replacement is subject  to  sub‐
455              stitutions  in  the same way as for the spam command: %L for the
456              text to the left of the match, %R for text to the right  of  the
457              match,  and %1 for the first subgroup in the match (etc). If you
458              simply want to erase the match, set it to “%L%R”. Any number  of
459              subjectrx commands may coexist.
460
461              Note  this  well: the replacement value replaces the entire sub‐
462              ject, not just the match!
463
464              unsubjectrx removes a  given  subjectrx  from  the  substitution
465              list. If * is used as the pattern, all substitutions will be re‐
466              moved.
467
468       unhook [ *  | hook-type ]
469              This command will remove all hooks of a given type, or all hooks
470              when  “*”  is  used as an argument.  hook-type can be any of the
471              -hook commands documented above.
472
473       mailto_allow header-field [ ... ]
474       unmailto_allow [ * | header-field ... ]
475
476              These commands allow the user to  modify  the  list  of  allowed
477              header fields in a mailto: URL that Mutt will include in the the
478              generated message.  By default the list  contains  only  subject
479              and body, as specified by RFC2368.
480
481       echo message
482              Prints  message  to  the message window. After printing the mes‐
483              sage, echo will pause for the number  of  seconds  specified  by
484              $sleep_time.
485
486       cd directory
487              Changes the current working directory.
488

PATTERNS

490       In various places with mutt, including some of the above mentioned hook
491       commands, you can specify patterns to match messages.
492
493   Constructing Patterns
494       A simple pattern consists of a modifier of the form “~character”,  pos‐
495       sibly  followed  by a parameter against which mutt is supposed to match
496       the object specified by this modifier.  For some characters, the ~  may
497       be  replaced  by  another character to alter the behavior of the match.
498       These are described in the list of modifiers, below.
499
500       With some of these modifiers, the object to be matched consists of sev‐
501       eral  e-mail  addresses.   In  these cases, the object is matched if at
502       least one of these e-mail addresses matches.  You  can  prepend  a  hat
503       (“^”)  character  to such a pattern to indicate that all addresses must
504       match in order to match the object.
505
506       You can construct complex patterns by combining  simple  patterns  with
507       logical  operators.   Logical  AND is specified by simply concatenating
508       two simple patterns, for instance “~C mutt-dev ~s bug”.  Logical OR  is
509       specified  by  inserting a vertical bar (“|”) between two patterns, for
510       instance “~C mutt-dev | ~s bug”.  Additionally, you can negate  a  pat‐
511       tern  by  prepending a bang (“!”) character.  For logical grouping, use
512       braces (“()”). Example: “!(~t mutt|~c mutt) ~f elkins”.
513
514   Simple Patterns
515       Mutt understands the following simple patterns:
516
517       ~A          all messages
518       ~b EXPR     messages which contain EXPR in the message body.
519       =b STRING   If IMAP is enabled, like ~b but searches for STRING on  the
520                   server,  rather than downloading each message and searching
521                   it locally.
522       ~B EXPR     messages which contain EXPR in the whole message.
523       =B STRING   If IMAP is enabled, like ~B but searches for STRING on  the
524                   server,  rather than downloading each message and searching
525                   it locally.
526       ~c EXPR     messages carbon-copied to EXPR
527       %c GROUP    messages carbon-copied to any member of GROUP
528       ~C EXPR     messages either to: or cc: EXPR
529       %C GROUP    messages either to: or cc: to any member of GROUP
530       ~d MIN-MAX  messages with “date-sent” in a Date range
531       ~D          deleted messages
532       ~e EXPR     messages which contain EXPR in the “Sender” field
533       %e GROUP    messages which contain a member of GROUP  in  the  “Sender”
534                   field
535       ~E          expired messages
536       ~f EXPR     messages originating from EXPR
537       %f GROUP    messages originating from any member of GROUP
538       ~F          flagged messages
539       ~g          PGP signed messages
540       ~G          PGP encrypted messages
541       ~h EXPR     messages which contain EXPR in the message header
542       =h STRING   If  IMAP is enabled, like ~h but searches for STRING on the
543                   server, rather than downloading each message and  searching
544                   it locally.  STRING must be of the form “header: substring”
545       ~H EXPR     messages with spam tags matching EXPR
546       ~i EXPR     messages which match EXPR in the “Message-ID” field
547       ~k          messages containing PGP key material
548       ~l          messages  addressed to a known mailing list (defined by ei‐
549                   ther subscribe or list)
550       ~L EXPR     messages either originated or received by EXPR
551       %L GROUP    messages either originated or received  by  any  member  of
552                   GROUP
553       ~m MIN-MAX  message in the range MIN to MAX
554       ~M EXPR     messages which contain a mime Content-Type matching EXPR
555       ~n MIN-MAX  messages with a score in the range MIN to MAX
556       ~N          new messages
557       ~O          old messages
558       ~p          messages  addressed to you (consults $from, alternates, and
559                   local account/hostname information)
560       ~P          messages from you (consults $from,  alternates,  and  local
561                   account/hostname information)
562       ~Q          messages which have been replied to
563       ~r MIN-MAX  messages with “date-received” in a Date range
564       ~R          read messages
565       ~s EXPR     messages having EXPR in the “Subject” field.
566       ~S          superseded messages
567       ~t EXPR     messages addressed to EXPR
568       ~T          tagged messages
569       ~u          messages addressed to a subscribed mailing list (defined by
570                   subscribe commands)
571       ~U          unread messages
572       ~v          message is part of a collapsed thread.
573       ~V          cryptographically verified messages
574       ~x EXPR     messages which contain EXPR in the “References” or  “In-Re‐
575                   ply-To” field
576       ~X MIN-MAX  messages with MIN - MAX attachments
577       ~y EXPR     messages which contain EXPR in the “X-Label” field
578       ~z MIN-MAX  messages with a size in the range MIN to MAX
579       ~=          duplicated messages (see $duplicate_threads)
580       ~$          unreferenced message (requires threaded view)
581       ~(PATTERN)  messages  in threads containing messages matching a certain
582                   pattern, e.g. all threads  containing  messages  from  you:
583                   ~(~P)
584       ~<(PATTERN) messages  whose  immediate  parent  matches  PATTERN,  e.g.
585                   replies to your messages: ~<(~P)
586       ~>(PATTERN) messages having an immediate child matching  PATTERN,  e.g.
587                   messages you replied to: ~>(~P)
588
589       In the above, EXPR is a regular expression.
590
591       With  the  ~d,  ~m,  ~n, ~r, ~X, and ~z modifiers, you can also specify
592       ranges in the forms <MAX, >MIN, MIN-, and -MAX.
593
594       With the ~z modifier, the suffixes “K” and “M” are allowed  to  specify
595       kilobyte and megabyte respectively.
596
597       The  ~b,  ~B, ~h, ~M, and ~X modifiers require reading each message in,
598       which can be much slower.
599
600       You can force Mutt to treat EXPR as a simple string instead of a  regu‐
601       lar expression by using = instead of ~ in the pattern name.
602
603   Matching dates
604       The ~d and ~r modifiers are used to match date ranges, which are inter‐
605       preted to be given in your local time zone.
606
607       A date is of the form DD[/MM[/[cc]YY]], that is, a two-digit date,  op‐
608       tionally  followed  by a two-digit month, optionally followed by a year
609       specifications.  Omitted fields default to the current month and year.
610
611       Mutt understands either two or four digit  year  specifications.   When
612       given  a two-digit year, mutt will interpret values less than 70 as ly‐
613       ing in the 21st century (i.e., “38” means 2038 and not 1938,  and  “00”
614       is  interpreted as 2000), and values greater than or equal to 70 as ly‐
615       ing in the 20th century.
616
617       Note that this behavior is Y2K compliant, but that  mutt  does  have  a
618       Y2.07K problem.
619
620       Alternatively, you may use YYYYMMDD to specify a date.
621
622       If  a  date  range  consists of a single date, the modifier in question
623       will match that precise date.  If the date range  consists  of  a  dash
624       (“-”), followed by a date, this range will match any date before and up
625       to the date given.  Similarly, a date followed by a  dash  matches  the
626       date  given  and  any  later  point of time.  Two dates, separated by a
627       dash, match any date which lies in the given range of time.
628
629       You can also modify any absolute date by giving an error range.  An er‐
630       ror range consists of one of the characters +, -, *, followed by a pos‐
631       itive number, followed by one of the unit characters y,  m,  w,  or  d,
632       specifying  a  unit  of years, months, weeks, or days.  + increases the
633       maximum date matched by the given interval of  time,  -  decreases  the
634       minimum date matched by the given interval of time, and * increases the
635       maximum date and decreases the minimum date matched by the given inter‐
636       val  of time.  It is possible to give multiple error margins, which cu‐
637       mulate.  Example: 1/1/2001-1w+2w*3d
638
639       You can also specify offsets relative to the current date.   An  offset
640       is  specified  as one of the characters <, >, =, followed by a positive
641       number, followed by one of the unit characters y, m, w, d, H, M, or  S.
642       >  matches  dates which are older than the specified amount of time, an
643       offset which begins with the character < matches dates which  are  more
644       recent  than  the  specified amount of time, and an offset which begins
645       with the character = matches points of time  which  are  precisely  the
646       given amount of time ago.
647

CONFIGURATION VARIABLES

649       abort_noattach
650              Type: quadoption
651              Default: no
652
653              When  the body of the message matches $abort_noattach_regexp and
654              there are no attachments, this quadoption  controls  whether  to
655              abort sending the message.
656
657
658
659       abort_noattach_regexp
660              Type: regular expression
661              Default: “attach”
662
663              Specifies  a regular expression to match against the body of the
664              message, to determine if an attachment was mentioned but mistak‐
665              enly  forgotten.   If  it  matches, $abort_noattach will be con‐
666              sulted to determine if message sending will be aborted.
667
668              Like other regular expressions in Mutt, the search is case  sen‐
669              sitive  if  the pattern contains at least one upper case letter,
670              and case insensitive otherwise.
671
672
673
674       abort_nosubject
675              Type: quadoption
676              Default: ask-yes
677
678              If set to yes, when composing messages and no subject  is  given
679              at  the  subject prompt, composition will be aborted.  If set to
680              no, composing messages with no  subject  given  at  the  subject
681              prompt will never be aborted.
682
683
684
685       abort_unmodified
686              Type: quadoption
687              Default: yes
688
689              If  set to yes, composition will automatically abort after edit‐
690              ing the message body if no changes are made to  the  file  (this
691              check  only happens after the first edit of the file).  When set
692              to no, composition will never be aborted.
693
694
695
696       alias_file
697              Type: path
698              Default: “~/.muttrc”
699
700              The default file in which to save aliases created by  the  <cre‐
701              ate-alias>  function.  Entries added to this file are encoded in
702              the character set specified by $config_charset if it is  set  or
703              the current character set otherwise.
704
705              Note: Mutt will not automatically source this file; you must ex‐
706              plicitly use the “source” command for it to be executed in  case
707              this option points to a dedicated alias file.
708
709              The  default  for this option is the currently used muttrc file,
710              or “~/.muttrc” if no user muttrc was found.
711
712
713
714       alias_format
715              Type: string
716              Default: “%4n %2f %t %-10a   %r”
717
718              Specifies the format of the data displayed for the “alias” menu.
719              The following printf(3)-style sequences are available:
720              %a     alias name
721              %f     flags - currently, a “d” for an alias marked for deletion
722              %n     index number
723              %r     address which alias expands to
724              %t     character  which indicates if the alias is tagged for in‐
725                     clusion
726
727
728       allow_8bit
729              Type: boolean
730              Default: yes
731
732              Controls whether 8-bit data is converted to 7-bit  using  either
733              Quoted- Printable or Base64 encoding when sending mail.
734
735
736
737       allow_ansi
738              Type: boolean
739              Default: no
740
741              Controls whether ANSI color codes in messages (and color tags in
742              rich text messages) are to be interpreted.  Messages  containing
743              these codes are rare, but if this option is set, their text will
744              be colored accordingly. Note that this may override  your  color
745              choices,  and  even  present a security problem, since a message
746              could include a line like
747
748
749              [-- PGP output follows ...
750
751
752              and give it the same color as your attachment  color  (see  also
753              $crypt_timestamp).
754
755
756
757       arrow_cursor
758              Type: boolean
759              Default: no
760
761              When  set,  an arrow (“->”) will be used to indicate the current
762              entry in menus instead of highlighting the whole line.  On  slow
763              network  or  modem  links this will make response faster because
764              there is less that has to be redrawn on the screen  when  moving
765              to the next or previous entries in the menu.
766
767
768
769       ascii_chars
770              Type: boolean
771              Default: no
772
773              If  set,  Mutt  will  use plain ASCII characters when displaying
774              thread and attachment trees, instead of the default ACS  charac‐
775              ters.
776
777
778
779       askbcc
780              Type: boolean
781              Default: no
782
783              If set, Mutt will prompt you for blind-carbon-copy (Bcc) recipi‐
784              ents before editing an outgoing message.
785
786
787
788       askcc
789              Type: boolean
790              Default: no
791
792              If set, Mutt will prompt you for carbon-copy (Cc) recipients be‐
793              fore editing the body of an outgoing message.
794
795
796
797       assumed_charset
798              Type: string
799              Default: “”
800
801              This  variable  is  a colon-separated list of character encoding
802              schemes for  messages  without  character  encoding  indication.
803              Header  field  values and message body content without character
804              encoding indication would be assumed that they  are  written  in
805              one of this list.  By default, all the header fields and message
806              body without  any  charset  indication  are  assumed  to  be  in
807              “us-ascii”.
808
809              For example, Japanese users might prefer this:
810
811
812              set assumed_charset=”iso-2022-jp:euc-jp:shift_jis:utf-8”
813
814
815              However, only the first content is valid for the message body.
816
817
818
819       attach_charset
820              Type: string
821              Default: “”
822
823              This  variable  is  a colon-separated list of character encoding
824              schemes for text file attachments. Mutt  uses  this  setting  to
825              guess which encoding files being attached are encoded in to con‐
826              vert them to a proper character set given in $send_charset.
827
828              If unset, the value of $charset will be used instead.  For exam‐
829              ple,  the  following  configuration would work for Japanese text
830              handling:
831
832
833              set attach_charset=”iso-2022-jp:euc-jp:shift_jis:utf-8”
834
835
836              Note: for Japanese users, “iso-2022-*” must be put at  the  head
837              of the value as shown above if included.
838
839
840
841       attach_format
842              Type: string
843              Default: “%u%D%I %t%4n %T%.40d%> [%.7m/%.10M, %.6e%?C?, %C?, %s] ”
844
845              This  variable  describes  the  format of the “attachment” menu.
846              The following printf(3)-style sequences are understood:
847              %C     charset
848              %c     requires charset conversion (“n” or “c”)
849              %D     deleted flag
850              %d     description (if none, falls back to %F)
851              %e     MIME content-transfer-encoding
852              %F     filename in content-disposition header  (if  none,  falls
853                     back to %f)
854              %f     filename
855              %I     disposition (“I” for inline, “A” for attachment)
856              %m     major MIME type
857              %M     MIME subtype
858              %n     attachment number
859              %Q     “Q”, if MIME part qualifies for attachment counting
860              %s     size (see formatstrings-size)
861              %t     tagged flag
862              %T     graphic tree characters
863              %u     unlink (=to delete) flag
864              %X     number  of  qualifying  MIME  parts  in this part and its
865                     children (please see the “attachments” section for possi‐
866                     ble speed effects)
867              %>X    right justify the rest of the string and pad with charac‐
868                     ter “X”
869              %|X    pad to the end of the line with character “X”
870              %*X    soft-fill with character “X” as pad
871
872              For an explanation of “soft-fill”, see the  $index_format  docu‐
873              mentation.
874
875
876
877       attach_save_charset_convert
878              Type: quadoption
879              Default: ask-yes
880
881              When  saving  received  text-type  attachments,  this quadoption
882              prompts to convert the character set if the encoding of the  at‐
883              tachment (or $assumed_charset if none is specified) differs from
884              charset.
885
886
887
888       attach_save_dir
889              Type: path
890              Default: “”
891
892              The default directory to save attachments from the  “attachment”
893              menu.   If  it doesn't exist, Mutt will prompt to create the di‐
894              rectory before saving.
895
896              If the path is invalid (e.g.  not  a  directory,  or  cannot  be
897              chdir'ed  to),  Mutt  will fall back to using the current direc‐
898              tory.
899
900
901
902       attach_sep
903              Type: string
904              Default: “\n”
905
906              The separator to add between attachments when operating (saving,
907              printing, piping, etc) on a list of tagged attachments.
908
909
910
911       attach_split
912              Type: boolean
913              Default: yes
914
915              If  this  variable  is  unset, when operating (saving, printing,
916              piping, etc) on a list of tagged attachments, Mutt will concate‐
917              nate  the  attachments  and will operate on them as a single at‐
918              tachment. The $attach_sep separator is added after each  attach‐
919              ment. When set, Mutt will operate on the attachments one by one.
920
921
922
923       attribution
924              Type: string (localized)
925              Default: “On %d, %n wrote:”
926
927              This  is  the  string that will precede a message which has been
928              included  in  a  reply.   For  a   full   listing   of   defined
929              printf(3)-like sequences see the section on $index_format.
930
931
932
933       attribution_locale
934              Type: string
935              Default: “”
936
937              The  locale  used by strftime(3) to format dates in the attribu‐
938              tion string.  Legal values are the strings your  system  accepts
939              for the locale environment variable $LC_TIME.
940
941              This variable is to allow the attribution date format to be cus‐
942              tomized by recipient or folder using hooks.   By  default,  Mutt
943              will  use  your  locale  environment, so there is no need to set
944              this except to override that default.
945
946
947
948       auto_subscribe
949              Type: boolean
950              Default: no
951
952              When set, Mutt assumes the presence of a List-Post header  means
953              the  recipient  is  subscribed  to the list.  Unless the mailing
954              list is in the “unsubscribe” or “unlist” lists, it will be added
955              to  the  “subscribe”  list.   Parsing  and checking these things
956              slows header reading down, so this option  is  disabled  by  de‐
957              fault.
958
959
960
961       auto_tag
962              Type: boolean
963              Default: no
964
965              When  set,  functions  in  the index menu which affect a message
966              will be applied to all tagged messages (if there are any).  When
967              unset,  you  must  first use the <tag-prefix> function (bound to
968              “;” by default) to make the next function apply  to  all  tagged
969              messages.
970
971
972
973       autocrypt
974              Type: boolean
975              Default: no
976
977              When  set,  enables autocrypt, which provides passive encryption
978              protection with keys exchanged via headers.  See  “autocryptdoc”
979              for more details.  (Autocrypt only)
980
981
982
983       autocrypt_acct_format
984              Type: string
985              Default: “%4n %-30a %20p %10s”
986
987              This  variable  describes  the format of the “autocrypt account”
988              menu.  The following printf(3)-style sequences are understood
989              %a     email address
990              %k     gpg keyid
991              %n     current entry number
992              %p     prefer-encrypt flag
993              %s     status flag (active/inactive)
994
995              (Autocrypt only)
996
997
998
999       autocrypt_dir
1000              Type: path
1001              Default: “~/.mutt/autocrypt”
1002
1003              This variable sets where autocrypt files are  stored,  including
1004              the  GPG  keyring  and  sqlite database.  See “autocryptdoc” for
1005              more details.  (Autocrypt only)
1006
1007
1008
1009       autocrypt_reply
1010              Type: boolean
1011              Default: yes
1012
1013              When set, replying to an autocrypt email  automatically  enables
1014              autocrypt  in  the  reply.  You may want to unset this if you're
1015              using the same key for autocrypt as normal web-of-trust, so that
1016              autocrypt isn't forced on for all encrypted replies.  (Autocrypt
1017              only)
1018
1019
1020
1021       autoedit
1022              Type: boolean
1023              Default: no
1024
1025              When set along with $edit_headers, Mutt will  skip  the  initial
1026              send-menu  (prompting  for subject and recipients) and allow you
1027              to immediately begin editing the  body  of  your  message.   The
1028              send-menu  may  still be accessed once you have finished editing
1029              the body of your message.
1030
1031              Note: when this option is set, you cannot  use  send-hooks  that
1032              depend  on  the recipients when composing a new (non-reply) mes‐
1033              sage, as the initial list of recipients is empty.
1034
1035              Also see $fast_reply.
1036
1037
1038
1039       background_edit
1040              Type: boolean
1041              Default: no
1042
1043              When set, Mutt will run $editor in the background during message
1044              composition.  A landing page will display, waiting for the $edi‐
1045              tor to exit.  The landing page may be exited,  allowing  perusal
1046              of  the  mailbox,  or  even  for  other messages to be composed.
1047              Backgrounded  sessions  may  be  returned  to  via  the   <back‐
1048              ground-compose-menu> function.
1049
1050              For  background editing to work properly, $editor must be set to
1051              an editor that does not try to use the Mutt terminal: for  exam‐
1052              ple  a graphical editor, or a script launching (and waiting for)
1053              the editor in another Gnu Screen window.
1054
1055              For more details, see “bgedit” (”Background Editing” in the man‐
1056              ual).
1057
1058
1059
1060       background_confirm_quit
1061              Type: boolean
1062              Default: yes
1063
1064              When set, if there are any background edit sessions, you will be
1065              prompted to confirm exiting  Mutt,  in  addition  to  the  $quit
1066              prompt.
1067
1068
1069
1070       background_format
1071              Type: string
1072              Default: “%10S %7p %s”
1073
1074              This  variable  describes the format of the “background compose”
1075              menu.  The following printf(3)-style sequences are understood:
1076              %i     parent message id (for replies and forwarded messages)
1077              %n     the running number on the menu
1078              %p     pid of the $editor process
1079              %r     comma separated list of “To:” recipients
1080              %R     comma separated list of “Cc:” recipients
1081              %s     subject of the message
1082              %S     status of the $editor process: running/finished
1083
1084
1085       beep
1086              Type: boolean
1087              Default: yes
1088
1089              When this variable is set, mutt will beep when an error occurs.
1090
1091
1092
1093       beep_new
1094              Type: boolean
1095              Default: no
1096
1097              When this variable is set, mutt will beep whenever it  prints  a
1098              message  notifying  you of new mail.  This is independent of the
1099              setting of the $beep variable.
1100
1101
1102
1103       bounce
1104              Type: quadoption
1105              Default: ask-yes
1106
1107              Controls whether you will be asked to confirm bouncing messages.
1108              If  set  to yes you don't get asked if you want to bounce a mes‐
1109              sage. Setting this variable to no is not generally  useful,  and
1110              thus not recommended, because you are unable to bounce messages.
1111
1112
1113
1114       bounce_delivered
1115              Type: boolean
1116              Default: yes
1117
1118              When  this variable is set, mutt will include Delivered-To head‐
1119              ers when bouncing messages.  Postfix users  may  wish  to  unset
1120              this variable.
1121
1122
1123
1124       braille_friendly
1125              Type: boolean
1126              Default: no
1127
1128              When this variable is set, mutt will place the cursor at the be‐
1129              ginning of the current line in menus, even when the  $arrow_cur‐
1130              sor  variable is unset, making it easier for blind persons using
1131              Braille displays to follow these menus.  The option is unset  by
1132              default  because  many  visual terminals don't permit making the
1133              cursor invisible.
1134
1135
1136
1137       browser_abbreviate_mailboxes
1138              Type: boolean
1139              Default: yes
1140
1141              When this variable is set, mutt will abbreviate mailbox names in
1142              the browser mailbox list, using '~' and '=' shortcuts.
1143
1144              The  default  ”alpha” setting of $sort_browser uses locale-based
1145              sorting (using  strcoll(3)),  which  ignores  some  punctuation.
1146              This  can  lead  to some situations where the order doesn't make
1147              intuitive sense.  In those cases, it may be desirable  to  unset
1148              this variable.
1149
1150
1151
1152       browser_sticky_cursor
1153              Type: boolean
1154              Default: yes
1155
1156              When  this variable is set, the browser will attempt to keep the
1157              cursor on the same mailbox when  performing  various  functions.
1158              These  include moving up a directory, toggling between mailboxes
1159              and directory listing,  creating/renaming  a  mailbox,  toggling
1160              subscribed mailboxes, and entering a new mask.
1161
1162
1163
1164       certificate_file
1165              Type: path
1166              Default: “~/.mutt_certificates”
1167
1168              This  variable  specifies  the  file  where the certificates you
1169              trust are saved. When an unknown certificate is encountered, you
1170              are  asked  if  you accept it or not. If you accept it, the cer‐
1171              tificate can also be saved in this file and further  connections
1172              are automatically accepted.
1173
1174              You  can  also  manually  add  CA certificates in this file. Any
1175              server certificate that is signed with one of these CA  certifi‐
1176              cates is also automatically accepted.
1177
1178              Example:
1179
1180
1181              set certificate_file=~/.mutt/certificates
1182
1183
1184              (OpenSSL and GnuTLS only)
1185
1186
1187
1188       change_folder_next
1189              Type: boolean
1190              Default: no
1191
1192              When  this variable is set, the <change-folder> function mailbox
1193              suggestion will start at the next  folder  in  your  “mailboxes”
1194              list, instead of starting at the first folder in the list.
1195
1196
1197
1198       charset
1199              Type: string
1200              Default: “”
1201
1202              Character  set  your  terminal uses to display and enter textual
1203              data.  It is also the fallback for $send_charset.
1204
1205              Upon startup Mutt tries to derive this  value  from  environment
1206              variables such as $LC_CTYPE or $LANG.
1207
1208              Note: It should only be set in case Mutt isn't able to determine
1209              the character set used correctly.
1210
1211
1212
1213       check_mbox_size
1214              Type: boolean
1215              Default: no
1216
1217              When this variable is set, mutt will use file size attribute in‐
1218              stead of access time when checking for new mail in mbox and mmdf
1219              folders.
1220
1221              This variable is unset by default and  should  only  be  enabled
1222              when  new mail detection for these folder types is unreliable or
1223              doesn't work.
1224
1225              Note that enabling this variable should happen before any “mail‐
1226              boxes” directives occur in configuration files regarding mbox or
1227              mmdf folders because mutt needs to  determine  the  initial  new
1228              mail  status of such a mailbox by performing a fast mailbox scan
1229              when it is defined.  Afterwards the new mail status  is  tracked
1230              by file size changes.
1231
1232
1233
1234       check_new
1235              Type: boolean
1236              Default: yes
1237
1238              Note: this option only affects maildir and MH style mailboxes.
1239
1240              When set, Mutt will check for new mail delivered while the mail‐
1241              box is open.  Especially with MH mailboxes, this  operation  can
1242              take  quite  some  time since it involves scanning the directory
1243              and checking each file to see if it has already been looked  at.
1244              If  this  variable  is unset, no check for new mail is performed
1245              while the mailbox is open.
1246
1247
1248
1249       collapse_unread
1250              Type: boolean
1251              Default: yes
1252
1253              When unset, Mutt will not collapse a thread if it  contains  any
1254              unread messages.
1255
1256
1257
1258       compose_confirm_detach_first
1259              Type: boolean
1260              Default: yes
1261
1262              When  set,  Mutt will prompt for confirmation when trying to use
1263              <detach-file> on the first entry in the compose menu.   This  is
1264              to  help prevent irreversible loss of the typed message by acci‐
1265              dentally hitting 'D' in the menu.
1266
1267              Note: Mutt only prompts for the first entry.   It  doesn't  keep
1268              track  of  which message is the typed message if the entries are
1269              reordered, or if the first entry was already deleted.
1270
1271
1272
1273       compose_format
1274              Type: string (localized)
1275              Default: “-- Mutt: Compose  [Approx. msg size: %l   Atts: %a]%>-”
1276
1277              Controls the format of the status line displayed  in  the  “com‐
1278              pose”  menu.   This string is similar to $status_format, but has
1279              its own set of printf(3)-like sequences:
1280              %a     total number of attachments
1281              %h     local hostname
1282              %l     approximate size (in bytes) of the current  message  (see
1283                     formatstrings-size)
1284              %v     Mutt version string
1285
1286              See  the  text describing the $status_format option for more in‐
1287              formation on how to set $compose_format.
1288
1289
1290
1291       config_charset
1292              Type: string
1293              Default: “”
1294
1295              When defined, Mutt will recode commands in rc  files  from  this
1296              encoding  to  the current character set as specified by $charset
1297              and aliases written to $alias_file from  the  current  character
1298              set.
1299
1300              Please note that if setting $charset it must be done before set‐
1301              ting $config_charset.
1302
1303              Recoding should be avoided as it may render unconvertable  char‐
1304              acters  as  question  marks which can lead to undesired side ef‐
1305              fects (for example in regular expressions).
1306
1307
1308
1309       confirmappend
1310              Type: boolean
1311              Default: yes
1312
1313              When set, Mutt will prompt for confirmation when appending  mes‐
1314              sages to an existing mailbox.
1315
1316
1317
1318       confirmcreate
1319              Type: boolean
1320              Default: yes
1321
1322              When set, Mutt will prompt for confirmation when saving messages
1323              to a mailbox which does not yet exist before creating it.
1324
1325
1326
1327       connect_timeout
1328              Type: number
1329              Default: 30
1330
1331              Causes Mutt to timeout a network connection (for  IMAP,  POP  or
1332              SMTP)  after  this many seconds if the connection is not able to
1333              be established.  A negative value causes Mutt  to  wait  indefi‐
1334              nitely for the connection attempt to succeed.
1335
1336
1337
1338       content_type
1339              Type: string
1340              Default: “text/plain”
1341
1342              Sets  the  default  Content-Type  for the body of newly composed
1343              messages.
1344
1345
1346
1347       copy
1348              Type: quadoption
1349              Default: yes
1350
1351              This variable controls whether or not copies  of  your  outgoing
1352              messages  will be saved for later references.  Also see $record,
1353              $save_name, $force_name and “fcc-hook”.
1354
1355
1356
1357       copy_decode_weed
1358              Type: boolean
1359              Default: no
1360
1361              Controls whether Mutt will weed headers when invoking  the  <de‐
1362              code-copy> or <decode-save> functions.
1363
1364
1365
1366       count_alternatives
1367              Type: boolean
1368              Default: no
1369
1370              When  set, Mutt will recurse inside multipart/alternatives while
1371              performing attachment searching and counting (see attachments).
1372
1373              Traditionally, multipart/alternative parts  have  simply  repre‐
1374              sented  different  encodings  of  the main content of the email.
1375              Unfortunately, some mail clients have started to place email at‐
1376              tachments  inside  one of alternatives.  Setting this will allow
1377              Mutt to find and count matching attachments  hidden  there,  and
1378              include them in the index via %X or through ~X pattern matching.
1379
1380
1381
1382       cursor_overlay
1383              Type: boolean
1384              Default: no
1385
1386              When  set,  Mutt will overlay the indicator, tree, sidebar_high‐
1387              light, and sidebar_indicator colors onto the currently  selected
1388              line.  This will allow default colors in those to be overridden,
1389              and for attributes to be merged between the layers.
1390
1391
1392
1393       crypt_autoencrypt
1394              Type: boolean
1395              Default: no
1396
1397              Setting this variable will cause Mutt to always attempt  to  PGP
1398              encrypt outgoing messages.  This is probably only useful in con‐
1399              nection to the “send-hook” command.  It can be overridden by use
1400              of  the  pgp menu, when encryption is not required or signing is
1401              requested as well.  If $smime_is_default is set, then OpenSSL is
1402              used instead to create S/MIME messages and settings can be over‐
1403              ridden by use of the smime menu instead.  (Crypto only)
1404
1405
1406
1407       crypt_autopgp
1408              Type: boolean
1409              Default: yes
1410
1411              This variable controls whether or not mutt may automatically en‐
1412              able  PGP  encryption/signing for messages.  See also $crypt_au‐
1413              toencrypt,  $crypt_replyencrypt,   $crypt_autosign,   $crypt_re‐
1414              plysign and $smime_is_default.
1415
1416
1417
1418       crypt_autosign
1419              Type: boolean
1420              Default: no
1421
1422              Setting this variable will cause Mutt to always attempt to cryp‐
1423              tographically sign outgoing messages.  This can be overridden by
1424              use  of the pgp menu, when signing is not required or encryption
1425              is requested as well. If $smime_is_default is set, then  OpenSSL
1426              is  used  instead  to create S/MIME messages and settings can be
1427              overridden by use of the smime menu instead  of  the  pgp  menu.
1428              (Crypto only)
1429
1430
1431
1432       crypt_autosmime
1433              Type: boolean
1434              Default: yes
1435
1436              This variable controls whether or not mutt may automatically en‐
1437              able S/MIME encryption/signing for messages. See also $crypt_au‐
1438              toencrypt,   $crypt_replyencrypt,   $crypt_autosign,  $crypt_re‐
1439              plysign and $smime_is_default.
1440
1441
1442
1443       crypt_confirmhook
1444              Type: boolean
1445              Default: yes
1446
1447              If set, then you will be prompted for confirmation of keys  when
1448              using  the  crypt-hook  command.  If unset, no such confirmation
1449              prompt will be presented.  This is generally considered  unsafe,
1450              especially where typos are concerned.
1451
1452
1453
1454       crypt_opportunistic_encrypt
1455              Type: boolean
1456              Default: no
1457
1458              Setting  this  variable  will cause Mutt to automatically enable
1459              and disable encryption, based on whether all  message  recipient
1460              keys can be located by Mutt.
1461
1462              When this option is enabled, Mutt will enable/disable encryption
1463              each time the TO, CC, and BCC lists are edited.  If  $edit_head‐
1464              ers  is  set,  Mutt  will  also  do  so each time the message is
1465              edited.
1466
1467              While this is set, encryption  can't  be  manually  enabled/dis‐
1468              abled.   The pgp or smime menus provide a selection to temporar‐
1469              ily disable this option for the current message.
1470
1471              If $crypt_autoencrypt or $crypt_replyencrypt  enable  encryption
1472              for  a  message,  this option will be disabled for that message.
1473              It can be  manually  re-enabled  in  the  pgp  or  smime  menus.
1474              (Crypto only)
1475
1476
1477
1478       crypt_opportunistic_encrypt_strong_keys
1479              Type: boolean
1480              Default: no
1481
1482              When set, this modifies the behavior of $crypt_opportunistic_en‐
1483              crypt to only search for ”strong keys”, that is, keys with  full
1484              validity  according  to  the web-of-trust algorithm.  A key with
1485              marginal or no validity will not  enable  opportunistic  encryp‐
1486              tion.
1487
1488              For S/MIME, the behavior depends on the backend.  Classic S/MIME
1489              will filter for certificates with the 't' (trusted) flag in  the
1490              .index  file.   The  GPGME  backend will use the same filters as
1491              with OpenPGP, and depends on GPGME's  logic  for  assigning  the
1492              GPGME_VALIDITY_FULL and GPGME_VALIDITY_ULTIMATE validity flag.
1493
1494
1495
1496       crypt_protected_headers_read
1497              Type: boolean
1498              Default: yes
1499
1500              When  set, Mutt will display protected headers in the pager, and
1501              will update the index and header  cache  with  revised  headers.
1502              Protected headers are stored inside the encrypted or signed part
1503              of an an email, to prevent disclosure or  tampering.   For  more
1504              information  see https://github.com/autocrypt/protected-headers.
1505              Currently Mutt only supports the Subject header.
1506
1507              Encrypted messages using protected headers often substitute  the
1508              exposed  Subject  header  with  a  dummy  value (see $crypt_pro‐
1509              tected_headers_subject).  Mutt will update its  concept  of  the
1510              correct  subject after the message is opened, i.e. via the <dis‐
1511              play-message> function.  If you reply to a message before  open‐
1512              ing  it,  Mutt will end up using the dummy Subject header, so be
1513              sure to open such a message first.  (Crypto only)
1514
1515
1516
1517       crypt_protected_headers_save
1518              Type: boolean
1519              Default: no
1520
1521              When $crypt_protected_headers_read is set, and a message with  a
1522              protected  Subject is opened, Mutt will save the updated Subject
1523              into the header cache by default.  This allows  searching/limit‐
1524              ing  based  on  the  protected  Subject header if the mailbox is
1525              re-opened, without having to  re-open  the  message  each  time.
1526              However,  for mbox/mh mailbox types, or if header caching is not
1527              set up, you would need to re-open  the  message  each  time  the
1528              mailbox was reopened before you could see or search/limit on the
1529              protected subject again.
1530
1531              When this variable is set, Mutt additionally saves the protected
1532              Subject  back  in the clear-text message headers.  This provides
1533              better usability, but with the  tradeoff  of  reduced  security.
1534              The protected Subject header, which may have previously been en‐
1535              crypted, is now stored in clear-text  in  the  message  headers.
1536              Copying the message elsewhere, via Mutt or external tools, could
1537              expose this previously encrypted data.  Please make sure you un‐
1538              derstand  the  consequences of this before you enable this vari‐
1539              able.  (Crypto only)
1540
1541
1542
1543       crypt_protected_headers_subject
1544              Type: string
1545              Default: “...”
1546
1547              When $crypt_protected_headers_write is set, and the  message  is
1548              marked for encryption, this will be substituted into the Subject
1549              field in the message headers.  To prevent a subject  from  being
1550              substituted, unset this variable, or set it to the empty string.
1551              (Crypto only)
1552
1553
1554
1555       crypt_protected_headers_write
1556              Type: boolean
1557              Default: no
1558
1559              When set, Mutt will generate protected headers  for  signed  and
1560              encrypted  emails.   Protected headers are stored inside the en‐
1561              crypted or signed part of an an email, to prevent disclosure  or
1562              tampering.   For  more  information  see  https://github.com/au
1563              tocrypt/protected-headers.  Currently  Mutt  only  supports  the
1564              Subject header.  (Crypto only)
1565
1566
1567
1568       crypt_replyencrypt
1569              Type: boolean
1570              Default: yes
1571
1572              If set, automatically PGP or OpenSSL encrypt replies to messages
1573              which are encrypted.  (Crypto only)
1574
1575
1576
1577       crypt_replysign
1578              Type: boolean
1579              Default: no
1580
1581              If set, automatically PGP or OpenSSL sign  replies  to  messages
1582              which are signed.
1583
1584              Note:  this  does  not  work  on messages that are encrypted and
1585              signed!  (Crypto only)
1586
1587
1588
1589       crypt_replysignencrypted
1590              Type: boolean
1591              Default: no
1592
1593              If set, automatically PGP or OpenSSL sign  replies  to  messages
1594              which  are  encrypted.  This  makes  sense  in  combination with
1595              $crypt_replyencrypt, because it allows you to sign all  messages
1596              which  are automatically encrypted.  This works around the prob‐
1597              lem noted in $crypt_replysign, that mutt is not able to find out
1598              whether an encrypted message is also signed.  (Crypto only)
1599
1600
1601
1602       crypt_timestamp
1603              Type: boolean
1604              Default: yes
1605
1606              If  set, mutt will include a time stamp in the lines surrounding
1607              PGP or S/MIME output, so spoofing such lines is more  difficult.
1608              If  you are using colors to mark these lines, and rely on these,
1609              you may unset this setting.  (Crypto only)
1610
1611
1612
1613       crypt_use_gpgme
1614              Type: boolean
1615              Default: no
1616
1617              This variable controls the use of the GPGME-enabled crypto back‐
1618              ends.   If  it is set and Mutt was built with gpgme support, the
1619              gpgme code for S/MIME and PGP will be used instead of the  clas‐
1620              sic  code.  Note that you need to set this option in .muttrc; it
1621              won't have any effect when used interactively.
1622
1623              Note that the GPGME backend does not support creating  old-style
1624              inline  (traditional)  PGP  encrypted  or  signed  messages (see
1625              $pgp_autoinline).
1626
1627
1628
1629       crypt_use_pka
1630              Type: boolean
1631              Default: no
1632
1633              Controls      whether       mutt       uses       PKA       (see
1634              http://www.g10code.de/docs/pka-intro.de.pdf)   during  signature
1635              verification (only supported by the GPGME backend).
1636
1637
1638
1639       crypt_verify_sig
1640              Type: quadoption
1641              Default: yes
1642
1643              If “yes”, always attempt to verify PGP or S/MIME signatures.  If
1644              “ask-*”,  ask  whether or not to verify the signature.  If “no”,
1645              never attempt to verify cryptographic signatures.  (Crypto only)
1646
1647
1648
1649       date_format
1650              Type: string
1651              Default: “!%a, %b %d, %Y at %I:%M:%S%p %Z”
1652
1653              This variable controls the format of the  date  printed  by  the
1654              “%d”  sequence  in  $index_format.   This is passed to the strf‐
1655              time(3) function to process the date, see the man page  for  the
1656              proper syntax.
1657
1658              Unless  the  first  character in the string is a bang (“!”), the
1659              month and week day names are expanded according to  the  locale.
1660              If the first character in the string is a bang, the bang is dis‐
1661              carded, and the month and week day names  in  the  rest  of  the
1662              string are expanded in the C locale (that is in US English).
1663
1664
1665
1666       default_hook
1667              Type: string
1668              Default: “~f %s !~P | (~P ~C %s)”
1669
1670              This  variable controls how “message-hook”, “reply-hook”, “send-
1671              hook”, “send2-hook”, “save-hook”, and “fcc-hook” will be  inter‐
1672              preted  if they are specified with only a simple regexp, instead
1673              of a matching pattern.  The hooks are expanded when they are de‐
1674              clared,  so a hook will be interpreted according to the value of
1675              this variable at the time the hook is declared.
1676
1677              The default value matches if the message is either from  a  user
1678              matching  the regular expression given, or if it is from you (if
1679              the from address matches “alternates”) and is to or cc'ed  to  a
1680              user matching the given regular expression.
1681
1682
1683
1684       delete
1685              Type: quadoption
1686              Default: ask-yes
1687
1688              Controls whether or not messages are really deleted when closing
1689              or synchronizing a mailbox.  If set to yes, messages marked  for
1690              deleting will automatically be purged without prompting.  If set
1691              to no, messages marked for deletion will be kept in the mailbox.
1692
1693              This  option  is  ignored  for  maildir-style   mailboxes   when
1694              $maildir_trash is set.
1695
1696
1697
1698       delete_untag
1699              Type: boolean
1700              Default: yes
1701
1702              If  this  option  is  set, mutt will untag messages when marking
1703              them for deletion.  This  applies  when  you  either  explicitly
1704              delete a message, or when you save it to another folder.
1705
1706
1707
1708       digest_collapse
1709              Type: boolean
1710              Default: yes
1711
1712              If this option is set, mutt's received-attachments menu will not
1713              show the subparts of individual messages in a  multipart/digest.
1714              To see these subparts, press “v” on that menu.
1715
1716
1717
1718       display_filter
1719              Type: path
1720              Default: “”
1721
1722              When  set,  specifies a command used to filter messages.  When a
1723              message is viewed it  is  passed  as  standard  input  to  $dis‐
1724              play_filter,  and the filtered message is read from the standard
1725              output.
1726
1727
1728
1729       dotlock_program
1730              Type: path
1731              Default: “/usr/bin/mutt_dotlock”
1732
1733              Contains the path of the mutt_dotlock(1) binary to  be  used  by
1734              mutt.
1735
1736
1737
1738       dsn_notify
1739              Type: string
1740              Default: “”
1741
1742              This  variable  sets  the  request  for when notification is re‐
1743              turned.  The string consists of a comma separated list (no  spa‐
1744              ces!)  of  one or more of the following: never, to never request
1745              notification, failure, to request notification  on  transmission
1746              failure, delay, to be notified of message delays, success, to be
1747              notified of successful transmission.
1748
1749              Example:
1750
1751
1752              set dsn_notify=”failure,delay”
1753
1754
1755              Note: when using $sendmail for delivery, you should  not  enable
1756              this  unless you are either using Sendmail 8.8.x or greater or a
1757              MTA providing a sendmail(1)-compatible interface supporting  the
1758              -N  option  for  DSN. For SMTP delivery, DSN support is auto-de‐
1759              tected so that it depends on the server whether DSN will be used
1760              or not.
1761
1762
1763
1764       dsn_return
1765              Type: string
1766              Default: “”
1767
1768              This  variable  controls how much of your message is returned in
1769              DSN messages.  It may be set to either hdrs to return  just  the
1770              message header, or full to return the full message.
1771
1772              Example:
1773
1774
1775              set dsn_return=hdrs
1776
1777
1778              Note:  when  using $sendmail for delivery, you should not enable
1779              this unless you are either using Sendmail 8.8.x or greater or  a
1780              MTA  providing a sendmail(1)-compatible interface supporting the
1781              -R option for DSN. For SMTP delivery, DSN  support  is  auto-de‐
1782              tected so that it depends on the server whether DSN will be used
1783              or not.
1784
1785
1786
1787       duplicate_threads
1788              Type: boolean
1789              Default: yes
1790
1791              This variable controls  whether  mutt,  when  $sort  is  set  to
1792              threads, threads messages with the same Message-Id together.  If
1793              it is set, it will indicate that it thinks they  are  duplicates
1794              of each other with an equals sign in the thread tree.
1795
1796
1797
1798       edit_headers
1799              Type: boolean
1800              Default: no
1801
1802              This  option allows you to edit the header of your outgoing mes‐
1803              sages along with the body of your message.
1804
1805              Although the compose menu may have localized header labels,  the
1806              labels  passed to your editor will be standard RFC 2822 headers,
1807              (e.g. To:, Cc:, Subject:).  Headers added in  your  editor  must
1808              also be RFC 2822 headers, or one of the pseudo headers listed in
1809              “edit-header”.  Mutt will not understand  localized  header  la‐
1810              bels, just as it would not when parsing an actual email.
1811
1812              Note  that changes made to the References: and Date: headers are
1813              ignored for interoperability reasons.
1814
1815
1816
1817       editor
1818              Type: path
1819              Default: “”
1820
1821              This variable specifies which editor is used by  mutt.   It  de‐
1822              faults  to  the  value  of  the $VISUAL, or $EDITOR, environment
1823              variable, or to the string “vi” if neither of those are set.
1824
1825              The $editor string may contain a %s escape, which  will  be  re‐
1826              placed  by  the name of the file to be edited.  If the %s escape
1827              does not appear in $editor, a space and the name  to  be  edited
1828              are appended.
1829
1830              The resulting string is then executed by running
1831
1832
1833              sh -c 'string'
1834
1835
1836              where string is the expansion of $editor described above.
1837
1838
1839
1840       encode_from
1841              Type: boolean
1842              Default: no
1843
1844              When  set,  mutt will quoted-printable encode messages when they
1845              contain the string “From ” (note the trailing space) in the  be‐
1846              ginning  of  a line.  This is useful to avoid the tampering cer‐
1847              tain mail delivery and transport agents tend to do with messages
1848              (in  order  to  prevent tools from misinterpreting the line as a
1849              mbox message separator).
1850
1851
1852
1853       entropy_file
1854              Type: path
1855              Default: “”
1856
1857              The file which includes random data that is used  to  initialize
1858              SSL library functions. (OpenSSL only)
1859
1860
1861
1862       envelope_from_address
1863              Type: e-mail address
1864              Default: “”
1865
1866              Manually  sets  the envelope sender for outgoing messages.  This
1867              value is ignored if $use_envelope_from is unset.
1868
1869
1870
1871       error_history
1872              Type: number
1873              Default: 30
1874
1875              This variable controls the size (in  number  of  strings  remem‐
1876              bered)  of  the  error messages displayed by mutt.  These can be
1877              shown with the <error-history> function.  The history is cleared
1878              each time this variable is set.
1879
1880
1881
1882       escape
1883              Type: string
1884              Default: “~”
1885
1886              Escape character to use for functions in the built-in editor.
1887
1888
1889
1890       fast_reply
1891              Type: boolean
1892              Default: no
1893
1894              When  set,  the  initial  prompt  for recipients and subject are
1895              skipped when replying to messages, and the  initial  prompt  for
1896              subject is skipped when forwarding messages.
1897
1898              Note: this variable has no effect when the $autoedit variable is
1899              set.
1900
1901
1902
1903       fcc_attach
1904              Type: quadoption
1905              Default: yes
1906
1907              This variable controls whether or not  attachments  on  outgoing
1908              messages are saved along with the main body of your message.
1909
1910              Note: $fcc_before_send forces the default (set) behavior of this
1911              option.
1912
1913
1914
1915       fcc_before_send
1916              Type: boolean
1917              Default: no
1918
1919              When this variable is set, FCCs will occur  before  sending  the
1920              message.   Before sending, the message cannot be manipulated, so
1921              it will be stored  the  exact  same  as  sent:  $fcc_attach  and
1922              $fcc_clear will be ignored (using their default values).
1923
1924              When  unset,  the default, FCCs will occur after sending.  Vari‐
1925              ables $fcc_attach and $fcc_clear will be respected, allowing  it
1926              to  be  stored  without attachments or encryption/signing if de‐
1927              sired.
1928
1929
1930
1931       fcc_clear
1932              Type: boolean
1933              Default: no
1934
1935              When this variable is set, FCCs will be stored  unencrypted  and
1936              unsigned,  even  when  the  actual  message  is encrypted and/or
1937              signed.
1938
1939              Note: $fcc_before_send forces the default  (unset)  behavior  of
1940              this option.  (PGP only)
1941
1942              See also $pgp_self_encrypt, $smime_self_encrypt.
1943
1944
1945
1946       fcc_delimiter
1947              Type: string
1948              Default: “”
1949
1950              When  specified, this allows the ability to Fcc to more than one
1951              mailbox.  The fcc value will be split by this delimiter and Mutt
1952              will evaluate each part as a mailbox separately.
1953
1954              See $record, “fcc-hook”, and “fcc-save-hook”.
1955
1956
1957
1958       flag_safe
1959              Type: boolean
1960              Default: no
1961
1962              If set, flagged messages cannot be deleted.
1963
1964
1965
1966       folder
1967              Type: path
1968              Default: “~/Mail”
1969
1970              Specifies  the default location of your mailboxes.  A “+” or “=”
1971              at the beginning of a pathname will be expanded to the value  of
1972              this  variable.  Note that if you change this variable (from the
1973              default) value you need to make sure that the assignment  occurs
1974              before  you  use “+” or “=” for any other variables since expan‐
1975              sion takes place when handling the “mailboxes” command.
1976
1977
1978
1979       folder_format
1980              Type: string
1981              Default: “%2C %t %N %F %2l %-8.8u %-8.8g %8s %d %f”
1982
1983              This variable allows you to customize the file  browser  display
1984              to  your  personal taste.  This string is similar to $index_for‐
1985              mat, but has its own set of printf(3)-like sequences:
1986              %C     current file number
1987              %d     date/time folder was last modified
1988              %D     date/time folder was last modified using $date_format.
1989              %f     filename (“/” is appended to directory names, “@” to sym‐
1990                     bolic links and “*” to executable files)
1991              %F     file permissions
1992              %g     group name (or numeric gid, if missing)
1993              %l     number of hard links
1994              %m     number of messages in the mailbox *
1995              %n     number of unread messages in the mailbox *
1996              %N     N if mailbox has new mail, blank otherwise
1997              %s     size in bytes (see formatstrings-size)
1998              %t     “*” if the file is tagged, blank otherwise
1999              %u     owner name (or numeric uid, if missing)
2000              %>X    right justify the rest of the string and pad with charac‐
2001                     ter “X”
2002              %|X    pad to the end of the line with character “X”
2003              %*X    soft-fill with character “X” as pad
2004
2005              For an explanation of “soft-fill”, see the  $index_format  docu‐
2006              mentation.
2007
2008              * = can be optionally printed if nonzero
2009
2010              %m,  %n,  and %N only work for monitored mailboxes.  %m requires
2011              $mail_check_stats to be set.  %n requires  $mail_check_stats  to
2012              be set (except for IMAP mailboxes).
2013
2014
2015
2016       followup_to
2017              Type: boolean
2018              Default: yes
2019
2020              Controls  whether or not the “Mail-Followup-To:” header field is
2021              generated when sending mail.  When set, Mutt will generate  this
2022              field  when  you are replying to a known mailing list, specified
2023              with the “subscribe” or “lists” commands.
2024
2025              This field has two purposes.  First, preventing you from receiv‐
2026              ing  duplicate  copies  of replies to messages which you send to
2027              mailing lists, and second, ensuring that you do get a reply sep‐
2028              arately  for  any  messages sent to known lists to which you are
2029              not subscribed.
2030
2031              The header will contain only the list's address  for  subscribed
2032              lists,  and both the list address and your own email address for
2033              unsubscribed lists.  Without this header, a group reply to  your
2034              message  sent to a subscribed list will be sent to both the list
2035              and your address, resulting in two copies of the same email  for
2036              you.
2037
2038
2039
2040       force_name
2041              Type: boolean
2042              Default: no
2043
2044              This  variable  is  similar to $save_name, except that Mutt will
2045              store a copy of your outgoing message by the username of the ad‐
2046              dress you are sending to even if that mailbox does not exist.
2047
2048              Also see the $record variable.
2049
2050
2051
2052       forward_attachments
2053              Type: quadoption
2054              Default: ask-yes
2055
2056              When  forwarding  inline  (i.e.  $mime_forward unset or answered
2057              with “no” and $forward_decode set), attachments which cannot  be
2058              decoded  in  a  reasonable  manner will be attached to the newly
2059              composed message if this quadoption  is  set  or  answered  with
2060              “yes”.
2061
2062
2063
2064       forward_attribution_intro
2065              Type: string (localized)
2066              Default: “----- Forwarded message from %f -----”
2067
2068              This  is  the  string that will precede a message which has been
2069              forwarded in the main body of a message (when  $mime_forward  is
2070              unset).   For a full listing of defined printf(3)-like sequences
2071              see the section on $index_format.  See also $attribution_locale.
2072
2073
2074
2075       forward_attribution_trailer
2076              Type: string (localized)
2077              Default: “----- End forwarded message -----”
2078
2079              This is the string that will follow a  message  which  has  been
2080              forwarded  in  the main body of a message (when $mime_forward is
2081              unset).  For a full listing of defined printf(3)-like  sequences
2082              see the section on $index_format.  See also $attribution_locale.
2083
2084
2085
2086       forward_decode
2087              Type: boolean
2088              Default: yes
2089
2090              Controls  the  decoding of complex MIME messages into text/plain
2091              when forwarding a message.  The message header is  also  RFC2047
2092              decoded.  This variable is only used, if $mime_forward is unset,
2093              otherwise $mime_forward_decode is used instead.
2094
2095
2096
2097       forward_decrypt
2098              Type: quadoption
2099              Default: yes
2100
2101              This quadoption controls the handling of encrypted messages when
2102              forwarding  or  attaching  a  message.   When set to or answered
2103              “yes”, the outer layer of encryption is stripped off.
2104
2105              This variable is used if $mime_forward  is  set  and  $mime_for‐
2106              ward_decode  is unset.  It is also used when attaching a message
2107              via <attach-message> in the compose menu.  (PGP only)
2108
2109
2110
2111       forward_edit
2112              Type: quadoption
2113              Default: yes
2114
2115              This quadoption controls whether or not the  user  is  automati‐
2116              cally  placed in the editor when forwarding messages.  For those
2117              who always want to forward with no modification, use  a  setting
2118              of “no”.
2119
2120
2121
2122       forward_format
2123              Type: string
2124              Default: “[%a: %s]”
2125
2126              This  variable  controls  the  default subject when forwarding a
2127              message.  It uses the same format sequences as the $index_format
2128              variable.
2129
2130
2131
2132       forward_quote
2133              Type: boolean
2134              Default: no
2135
2136              When  set,  forwarded  messages included in the main body of the
2137              message (when $mime_forward is unset) will be quoted using  $in‐
2138              dent_string.
2139
2140
2141
2142       from
2143              Type: e-mail address
2144              Default: “”
2145
2146              When set, this variable contains a default from address.  It can
2147              be overridden using “my_hdr” (including from a “send-hook”)  and
2148              $reverse_name.  This variable is ignored if $use_from is unset.
2149
2150              This  setting  defaults to the contents of the environment vari‐
2151              able $EMAIL.
2152
2153
2154
2155       gecos_mask
2156              Type: regular expression
2157              Default: “^[^,]*”
2158
2159              A regular expression used by mutt to parse the GECOS field of  a
2160              password entry when expanding the alias.  The default value will
2161              return the string up to the first “,” encountered.  If the GECOS
2162              field  contains  a  string  like  “lastname, firstname” then you
2163              should set it to “.*”.
2164
2165              This can be useful if you see the following  behavior:  you  ad‐
2166              dress  an  e-mail  to user ID “stevef” whose full name is “Steve
2167              Franklin”.    If   mutt   expands   “stevef”   to    “”Franklin”
2168              stevef@foo.bar” then you should set the $gecos_mask to a regular
2169              expression that will match the whole name so  mutt  will  expand
2170              “Franklin” to “Franklin, Steve”.
2171
2172
2173
2174       hdrs
2175              Type: boolean
2176              Default: yes
2177
2178              When  unset,  the  header  fields normally added by the “my_hdr”
2179              command are not created.  This variable  must  be  unset  before
2180              composing a new message or replying in order to take effect.  If
2181              set, the user defined header fields are added to every new  mes‐
2182              sage.
2183
2184
2185
2186       header
2187              Type: boolean
2188              Default: no
2189
2190              When set, this variable causes Mutt to include the header of the
2191              message you are replying to into the  edit  buffer.   The  $weed
2192              setting applies.
2193
2194
2195
2196       header_cache
2197              Type: path
2198              Default: “”
2199
2200              This  variable points to the header cache database.  If pointing
2201              to a directory Mutt will contain a header  cache  database  file
2202              per  folder,  if  pointing  to a file that file will be a single
2203              global header cache. By default it is unset so no header caching
2204              will be used.  If pointing to a directory, it must be created in
2205              advance.
2206
2207              Header caching can greatly improve speed when opening POP,  IMAP
2208              MH or Maildir folders, see “caching” for details.
2209
2210
2211
2212       header_cache_compress
2213              Type: boolean
2214              Default: yes
2215
2216              When  mutt  is compiled with qdbm, tokyocabinet, or kyotocabinet
2217              as header cache backend,  this  option  determines  whether  the
2218              database  will  be  compressed.  Compression results in database
2219              files roughly being one fifth of the usual  diskspace,  but  the
2220              decompression can result in a slower opening of cached folder(s)
2221              which in general is still much faster than  opening  non  header
2222              cached folders.
2223
2224
2225
2226       header_cache_pagesize
2227              Type: number (long)
2228              Default: 16384
2229
2230              When  mutt  is  compiled  with either gdbm or bdb4 as the header
2231              cache backend, this option changes the database page size.   Too
2232              large  or too small values can waste space, memory, or CPU time.
2233              The default should be more or less optimal for most use cases.
2234
2235
2236
2237       header_color_partial
2238              Type: boolean
2239              Default: no
2240
2241              When set, color header regexps behave like color  body  regexps:
2242              color  is applied to the exact text matched by the regexp.  When
2243              unset, color is applied to the entire header.
2244
2245              One use of this option might be  to  apply  color  to  just  the
2246              header labels.
2247
2248              See “color” for more details.
2249
2250
2251
2252       help
2253              Type: boolean
2254              Default: yes
2255
2256              When set, help lines describing the bindings for the major func‐
2257              tions provided by each menu are displayed on the first  line  of
2258              the screen.
2259
2260              Note:  The  binding will not be displayed correctly if the func‐
2261              tion is bound to a sequence  rather  than  a  single  keystroke.
2262              Also,  the  help line may not be updated if a binding is changed
2263              while Mutt is running.  Since this variable is  primarily  aimed
2264              at new users, neither of these should present a major problem.
2265
2266
2267
2268       hidden_host
2269              Type: boolean
2270              Default: no
2271
2272              When  set,  mutt will skip the host name part of $hostname vari‐
2273              able when adding the domain part to  addresses.   This  variable
2274              does  not  affect the generation of Message-IDs, and it will not
2275              lead to the cut-off of first-level domains.
2276
2277
2278
2279       hide_limited
2280              Type: boolean
2281              Default: no
2282
2283              When set, mutt will not show the presence of messages  that  are
2284              hidden by limiting, in the thread tree.
2285
2286
2287
2288       hide_missing
2289              Type: boolean
2290              Default: yes
2291
2292              When set, mutt will not show the presence of missing messages in
2293              the thread tree.
2294
2295
2296
2297       hide_thread_subject
2298              Type: boolean
2299              Default: yes
2300
2301              When set, mutt will not show the  subject  of  messages  in  the
2302              thread  tree that have the same subject as their parent or clos‐
2303              est previously displayed sibling.
2304
2305
2306
2307       hide_top_limited
2308              Type: boolean
2309              Default: no
2310
2311              When set, mutt will not show the presence of messages  that  are
2312              hidden  by  limiting,  at the top of threads in the thread tree.
2313              Note that when $hide_limited is set, this option  will  have  no
2314              effect.
2315
2316
2317
2318       hide_top_missing
2319              Type: boolean
2320              Default: yes
2321
2322              When set, mutt will not show the presence of missing messages at
2323              the  top  of  threads  in  the  thread  tree.   Note  that  when
2324              $hide_missing is set, this option will have no effect.
2325
2326
2327
2328       history
2329              Type: number
2330              Default: 10
2331
2332              This  variable  controls  the  size (in number of strings remem‐
2333              bered) of the string history buffer per category. The buffer  is
2334              cleared each time the variable is set.
2335
2336
2337
2338       history_file
2339              Type: path
2340              Default: “~/.mutthistory”
2341
2342              The file in which Mutt will save its history.
2343
2344              Also see $save_history.
2345
2346
2347
2348       history_remove_dups
2349              Type: boolean
2350              Default: no
2351
2352              When  set,  all of the string history will be scanned for dupli‐
2353              cates when a new entry is added.  Duplicate entries in the $his‐
2354              tory_file  will  also  be  removed  when it is periodically com‐
2355              pacted.
2356
2357
2358
2359       honor_disposition
2360              Type: boolean
2361              Default: no
2362
2363              When set, Mutt will not display attachments with  a  disposition
2364              of “attachment” inline even if it could render the part to plain
2365              text. These MIME parts can only be viewed  from  the  attachment
2366              menu.
2367
2368              If unset, Mutt will render all MIME parts it can properly trans‐
2369              form to plain text.
2370
2371
2372
2373       honor_followup_to
2374              Type: quadoption
2375              Default: yes
2376
2377              This variable controls whether or not a Mail-Followup-To  header
2378              is honored when group-replying to a message.
2379
2380
2381
2382       hostname
2383              Type: string
2384              Default: “”
2385
2386              Specifies  the  fully-qualified  hostname  of the system mutt is
2387              running on containing the host's name and the DNS domain it  be‐
2388              longs  to.  It  is used as the domain part (after “@”) for local
2389              email addresses as well as Message-Id headers.
2390
2391              Its value is determined at startup as follows: the node's  host‐
2392              name  is  first determined by the uname(3) function.  The domain
2393              is then looked up using the  gethostname(2)  and  getaddrinfo(3)
2394              functions.   If  those calls are unable to determine the domain,
2395              the full value returned by uname is used.  Optionally, Mutt  can
2396              be  compiled  with  a fixed domain name in which case a detected
2397              one is not used.
2398
2399              Starting in Mutt 2.0, the operations described in  the  previous
2400              paragraph  are  performed after the muttrc is processed, instead
2401              of beforehand.  This way, if the DNS operations are creating de‐
2402              lays  at  startup,  you  can avoid those by manually setting the
2403              value in your muttrc.
2404
2405              Also see $use_domain and $hidden_host.
2406
2407
2408
2409       idn_decode
2410              Type: boolean
2411              Default: yes
2412
2413              When set, Mutt will show you international domain names decoded.
2414              Note:  You  can  use  IDNs  for addresses even if this is unset.
2415              This variable only affects decoding. (IDN only)
2416
2417
2418
2419       idn_encode
2420              Type: boolean
2421              Default: yes
2422
2423              When set, Mutt will encode international domain names using IDN.
2424              Unset this if your SMTP server can handle newer (RFC 6531) UTF-8
2425              encoded domains. (IDN only)
2426
2427
2428
2429       ignore_linear_white_space
2430              Type: boolean
2431              Default: no
2432
2433              This option replaces linear-white-space between encoded-word and
2434              text  to  a  single space to prevent the display of MIME-encoded
2435              “Subject:” field from being divided into multiple lines.
2436
2437
2438
2439       ignore_list_reply_to
2440              Type: boolean
2441              Default: no
2442
2443              Affects the behavior of the <reply> function  when  replying  to
2444              messages  from  mailing  lists (as defined by the “subscribe” or
2445              “lists” commands).  When set, if the “Reply-To:” field is set to
2446              the  same  value  as the “To:” field, Mutt assumes that the “Re‐
2447              ply-To:” field was set by the mailing list to automate responses
2448              to  the  list, and will ignore this field.  To direct a response
2449              to the mailing list when this option is set, use  the  <list-re‐
2450              ply>  function;  <group-reply> will reply to both the sender and
2451              the list.
2452
2453
2454
2455       imap_authenticators
2456              Type: string
2457              Default: “”
2458
2459              This is a colon-delimited list of  authentication  methods  mutt
2460              may  attempt  to  use  to log in to an IMAP server, in the order
2461              mutt should try them.  Authentication methods are either “login”
2462              or  the right side of an IMAP “AUTH=xxx” capability string, e.g.
2463              “digest-md5”, “gssapi” or “cram-md5”. This option is case-insen‐
2464              sitive.  If it's unset (the default) mutt will try all available
2465              methods, in order from most-secure to least-secure.
2466
2467              Example:
2468
2469
2470              set imap_authenticators=”gssapi:cram-md5:login”
2471
2472
2473              Note: Mutt will only fall back to other  authentication  methods
2474              if  the  previous methods are unavailable. If a method is avail‐
2475              able but authentication fails, mutt will not connect to the IMAP
2476              server.
2477
2478
2479
2480       imap_check_subscribed
2481              Type: boolean
2482              Default: no
2483
2484              When  set,  mutt  will  fetch the set of subscribed folders from
2485              your server on connection, and add them to the set of  mailboxes
2486              it  polls  for  new  mail  just  as if you had issued individual
2487              “mailboxes” commands.
2488
2489
2490
2491       imap_condstore
2492              Type: boolean
2493              Default: no
2494
2495              When set, mutt will use the CONDSTORE extension  (RFC  7162)  if
2496              advertised  by the server.  Mutt's current implementation is ba‐
2497              sic, used only for initial message fetching and flag updates.
2498
2499              For some IMAP servers, enabling  this  will  slightly  speed  up
2500              downloading  initial  messages.  Unfortunately, Gmail is not one
2501              those,  and  displays  worse  performance  when  enabled.   Your
2502              mileage may vary.
2503
2504
2505
2506       imap_deflate
2507              Type: boolean
2508              Default: no
2509
2510              When  set,  mutt  will  use  the COMPRESS=DEFLATE extension (RFC
2511              4978) if advertised by the server.
2512
2513              In general a good compression efficiency can be achieved,  which
2514              speeds  up  reading  large mailboxes also on fairly good connec‐
2515              tions.
2516
2517
2518
2519       imap_delim_chars
2520              Type: string
2521              Default: “/.”
2522
2523              This contains the list of characters which  you  would  like  to
2524              treat as folder separators for displaying IMAP paths. In partic‐
2525              ular it helps in using the “=” shortcut for  your  folder  vari‐
2526              able.
2527
2528
2529
2530       imap_fetch_chunk_size
2531              Type: number (long)
2532              Default: 0
2533
2534              When  set  to  a value greater than 0, new headers will be down‐
2535              loaded in groups of this many headers per request.  If you  have
2536              a  very  large mailbox, this might prevent a timeout and discon‐
2537              nect when opening the mailbox, by sending a  FETCH  per  set  of
2538              this  many  headers, instead of a single FETCH for all new head‐
2539              ers.
2540
2541
2542
2543       imap_headers
2544              Type: string
2545              Default: “”
2546
2547              Mutt requests these header fields in  addition  to  the  default
2548              headers  (“Date:”, “From:”, “Sender:”, “Subject:”, “To:”, “Cc:”,
2549              “Message-Id:”, “References:”, “Content-Type:”, “Content-Descrip‐
2550              tion:”,  “In-Reply-To:”,  “Reply-To:”,  “Lines:”,  “List-Post:”,
2551              “X-Label:”) from IMAP servers before displaying the index  menu.
2552              You may want to add more headers for spam detection.
2553
2554              Note:  This is a space separated list, items should be uppercase
2555              and not contain the colon, e.g. “X-BOGOSITY  X-SPAM-STATUS”  for
2556              the “X-Bogosity:” and “X-Spam-Status:” header fields.
2557
2558
2559
2560       imap_idle
2561              Type: boolean
2562              Default: no
2563
2564              When  set,  mutt  will attempt to use the IMAP IDLE extension to
2565              check for new mail in the current mailbox. Some servers (dovecot
2566              was  the  inspiration for this option) react badly to mutt's im‐
2567              plementation. If your connection seems  to  freeze  up  periodi‐
2568              cally, try unsetting this.
2569
2570
2571
2572       imap_keepalive
2573              Type: number
2574              Default: 300
2575
2576              This  variable  specifies  the maximum amount of time in seconds
2577              that mutt will wait before polling  open  IMAP  connections,  to
2578              prevent  the  server  from closing them before mutt has finished
2579              with them. The default is well within the RFC-specified  minimum
2580              amount  of  time  (30  minutes) before a server is allowed to do
2581              this, but in practice the RFC does get violated  every  now  and
2582              then.  Reduce  this  number if you find yourself getting discon‐
2583              nected from your IMAP server due to inactivity.
2584
2585
2586
2587       imap_list_subscribed
2588              Type: boolean
2589              Default: no
2590
2591              This variable configures whether IMAP folder browsing will  look
2592              for only subscribed folders or all folders.  This can be toggled
2593              in the IMAP browser with the <toggle-subscribed> function.
2594
2595
2596
2597       imap_login
2598              Type: string
2599              Default: “”
2600
2601              Your login name on the IMAP server.
2602
2603              This variable defaults to the value of $imap_user.
2604
2605
2606
2607       imap_oauth_refresh_command
2608              Type: string
2609              Default: “”
2610
2611              The command to run to generate an OAUTH refresh token for autho‐
2612              rizing  your  connection to your IMAP server.  This command will
2613              be run on every connection attempt that uses the OAUTHBEARER au‐
2614              thentication mechanism.  See “oauth” for details.
2615
2616
2617
2618       imap_pass
2619              Type: string
2620              Default: “”
2621
2622              Specifies  the  password  for your IMAP account.  If unset, Mutt
2623              will  prompt  you  for  your  password  when  you   invoke   the
2624              <imap-fetch-mail> function or try to open an IMAP folder.
2625
2626              Warning:  you  should  only  use  this  option when you are on a
2627              fairly secure machine, because the superuser can read your  mut‐
2628              trc even if you are the only one who can read the file.
2629
2630
2631
2632       imap_passive
2633              Type: boolean
2634              Default: yes
2635
2636              When  set,  mutt will not open new IMAP connections to check for
2637              new mail.  Mutt will only check for new mail over existing  IMAP
2638              connections.   This  is  useful if you don't want to be prompted
2639              for user/password pairs on mutt invocation, or  if  opening  the
2640              connection is slow.
2641
2642
2643
2644       imap_peek
2645              Type: boolean
2646              Default: yes
2647
2648              When  set,  mutt will avoid implicitly marking your mail as read
2649              whenever you fetch a message from the server. This is  generally
2650              a  good  thing,  but  can  make  closing an IMAP folder somewhat
2651              slower. This option exists to appease speed freaks.
2652
2653
2654
2655       imap_pipeline_depth
2656              Type: number
2657              Default: 15
2658
2659              Controls the number of IMAP commands that may be queued  up  be‐
2660              fore  they are sent to the server. A deeper pipeline reduces the
2661              amount of time mutt must wait for the server, and can make  IMAP
2662              servers feel much more responsive. But not all servers correctly
2663              handle pipelined commands, so if you  have  problems  you  might
2664              want to try setting this variable to 0.
2665
2666              Note:  Changes  to  this variable have no effect on open connec‐
2667              tions.
2668
2669
2670
2671       imap_poll_timeout
2672              Type: number
2673              Default: 15
2674
2675              This variable specifies the maximum amount of  time  in  seconds
2676              that mutt will wait for a response when polling IMAP connections
2677              for new mail, before timing out and closing the connection.  Set
2678              to 0 to disable timing out.
2679
2680
2681
2682       imap_qresync
2683              Type: boolean
2684              Default: no
2685
2686              When  set, mutt will use the QRESYNC extension (RFC 7162) if ad‐
2687              vertised by the server.  Mutt's current implementation is basic,
2688              used only for initial message fetching and flag updates.
2689
2690              Note: this feature is currently experimental.  If you experience
2691              strange behavior, such as duplicate or missing  messages  please
2692              file a bug report to let us know.
2693
2694
2695
2696       imap_servernoise
2697              Type: boolean
2698              Default: yes
2699
2700              When  set,  mutt  will  display  warning  messages from the IMAP
2701              server as error messages. Since these messages are  often  harm‐
2702              less,  or  generated due to configuration problems on the server
2703              which are out of the users' hands, you may wish to suppress them
2704              at some point.
2705
2706
2707
2708       imap_user
2709              Type: string
2710              Default: “”
2711
2712              The name of the user whose mail you intend to access on the IMAP
2713              server.
2714
2715              This variable defaults to your user name on the local machine.
2716
2717
2718
2719       implicit_autoview
2720              Type: boolean
2721              Default: no
2722
2723              If set to “yes”, mutt will look for a  mailcap  entry  with  the
2724copiousoutput”  flag  set  for every MIME attachment it doesn't
2725              have an internal viewer defined for.  If such an entry is found,
2726              mutt  will  use  the viewer defined in that entry to convert the
2727              body part to text form.
2728
2729
2730
2731       include
2732              Type: quadoption
2733              Default: ask-yes
2734
2735              Controls whether or not a copy of the message(s) you are  reply‐
2736              ing to is included in your reply.
2737
2738
2739
2740       include_encrypted
2741              Type: boolean
2742              Default: no
2743
2744              Controls  whether  or not Mutt includes separately encrypted at‐
2745              tachment contents when replying.
2746
2747              This variable was added to prevent accidental  exposure  of  en‐
2748              crypted  contents when replying to an attacker.  If a previously
2749              encrypted message were attached  by  the  attacker,  they  could
2750              trick an unwary recipient into decrypting and including the mes‐
2751              sage in their reply.
2752
2753
2754
2755       include_onlyfirst
2756              Type: boolean
2757              Default: no
2758
2759              Controls whether or not Mutt includes only the first  attachment
2760              of the message you are replying.
2761
2762
2763
2764       indent_string
2765              Type: string
2766              Default: “> ”
2767
2768              Specifies the string to prepend to each line of text quoted in a
2769              message to which you are replying.  You are strongly  encouraged
2770              not to change this value, as it tends to agitate the more fanat‐
2771              ical netizens.
2772
2773              The value of this option is ignored if $text_flowed is set,  be‐
2774              cause  the  quoting  mechanism  is  strictly  defined  for  for‐
2775              mat=flowed.
2776
2777              This option is a format string, please see  the  description  of
2778              $index_format for supported printf(3)-style sequences.
2779
2780
2781
2782       index_format
2783              Type: string
2784              Default: “%4C %Z %{%b %d} %-15.15L (%?l?%4l&%4c?) %s”
2785
2786              This  variable allows you to customize the message index display
2787              to your personal taste.
2788
2789              “Format strings” are similar to the strings used in the C  func‐
2790              tion  printf(3)  to format output (see the man page for more de‐
2791              tails).  For an explanation of the %? construct, see  the  $sta‐
2792              tus_format  description.  The following sequences are defined in
2793              Mutt:
2794              %a     address of the author
2795              %A     reply-to address (if present; otherwise: address  of  au‐
2796                     thor)
2797              %b     filename of the original message folder (think mailbox)
2798              %B     the list to which the letter was sent, or else the folder
2799                     name (%b).
2800              %c     number of characters (bytes) in the message (see  format‐
2801                     strings-size)
2802              %C     current message number
2803              %d     date  and  time of the message in the format specified by
2804                     $date_format converted to sender's time zone
2805              %D     date and time of the message in the format  specified  by
2806                     $date_format converted to the local time zone
2807              %e     current message number in thread
2808              %E     number of messages in current thread
2809              %f     sender  (address  +  real  name),  either  From:  or  Re‐
2810                     turn-Path:
2811              %F     author name, or recipient name if the message is from you
2812              %H     spam attribute(s) of this message
2813              %i     message-id of the current message
2814              %l     number of lines in the unprocessed message (may not  work
2815                     with maildir, mh, and IMAP folders)
2816              %L     If  an address in the “To:” or “Cc:” header field matches
2817                     an address defined by the users “subscribe” command, this
2818                     displays ”To <list-name>”, otherwise the same as %F.
2819              %m     total number of message in the mailbox
2820              %M     number of hidden messages if the thread is collapsed.
2821              %N     message score
2822              %n     author's real name (or address if missing)
2823              %O     original  save  folder  where  mutt  would  formerly have
2824                     stashed the message: list name or recipient name  if  not
2825                     sent to a list
2826              %P     progress  indicator  for  the built-in pager (how much of
2827                     the file has been displayed)
2828              %r     comma separated list of “To:” recipients
2829              %R     comma separated list of “Cc:” recipients
2830              %s     subject of the message
2831              %S     single    character     status     of     the     message
2832                     (“N”/“O”/“D”/“d”/“!”/“r”/“*”)
2833              %t     “To:” field (recipients)
2834              %T     the appropriate character from the $to_chars string
2835              %u     user (login) name of the author
2836              %v     first name of the author, or the recipient if the message
2837                     is from you
2838              %X     number of attachments (please see the “attachments”  sec‐
2839                     tion for possible speed effects)
2840              %y     “X-Label:” field, if present
2841              %Y     “X-Label:”  field,  if  present, and (1) not at part of a
2842                     thread tree, (2) at the top of a thread,  or  (3)  “X-La‐
2843                     bel:” is different from preceding message's “X-Label:”.
2844              %Z     a three character set of message status flags.  the first
2845                     character        is        new/read/replied         flags
2846                     (“n”/“o”/“r”/“O”/“N”).   the second is deleted or encryp‐
2847                     tion flags (“D”/“d”/“S”/“P”/“s”/“K”).  the third  is  ei‐
2848                     ther  tagged/flagged  (“*”/“!”), or one of the characters
2849                     listed in $to_chars.
2850              %@name@
2851                     insert and evaluate format-string from the matching  “in‐
2852                     dex-format-hook” command
2853              %{fmt} the date and time of the message is converted to sender's
2854                     time zone, and “fmt” is expanded by the library  function
2855                     strftime(3); a leading bang disables locales
2856              %[fmt] the  date and time of the message is converted to the lo‐
2857                     cal time zone, and “fmt” is expanded by the library func‐
2858                     tion strftime(3); a leading bang disables locales
2859              %(fmt) the  local  date  and time when the message was received.
2860                     “fmt” is expanded by the library function strftime(3);  a
2861                     leading bang disables locales
2862              %<fmt> the  current local time. “fmt” is expanded by the library
2863                     function strftime(3); a leading bang disables locales.
2864              %>X    right justify the rest of the string and pad with charac‐
2865                     ter “X”
2866              %|X    pad to the end of the line with character “X”
2867              %*X    soft-fill with character “X” as pad
2868
2869              Note  that  for  mbox/mmdf, “%l” applies to the unprocessed mes‐
2870              sage, and for maildir/mh, the  value  comes  from  the  “Lines:”
2871              header  field  when  present (the meaning is normally the same).
2872              Thus the value depends on the encodings used  in  the  different
2873              parts of the message and has little meaning in practice.
2874
2875              “Soft-fill”  deserves  some explanation: Normal right-justifica‐
2876              tion will print everything to the left of the  “%>”,  displaying
2877              padding  and whatever lies to the right only if there's room. By
2878              contrast, soft-fill gives priority to the right-hand side, guar‐
2879              anteeing space to display it and showing padding only if there's
2880              still room. If necessary, soft-fill will eat text  leftwards  to
2881              make room for rightward text.
2882
2883              Note  that  these  expandos  are supported in “save-hook”, “fcc-
2884              hook”, “fcc-save-hook”, and “index-format-hook”.
2885
2886              They are also supported in the configuration variables $attribu‐
2887              tion,  $forward_attribution_intro, $forward_attribution_trailer,
2888              $forward_format, $indent_string, $message_format, $pager_format,
2889              and $post_indent_string.
2890
2891
2892
2893       ispell
2894              Type: path
2895              Default: “/usr/bin/hunspell”
2896
2897              How to invoke ispell (GNU's spell-checking software).
2898
2899
2900
2901       keep_flagged
2902              Type: boolean
2903              Default: no
2904
2905              If  set,  read messages marked as flagged will not be moved from
2906              your spool mailbox to your $mbox mailbox, or as a  result  of  a
2907              “mbox-hook” command.
2908
2909
2910
2911       local_date_header
2912              Type: boolean
2913              Default: yes
2914
2915              If set, the date in the Date header of emails that you send will
2916              be in your local timezone. If unset a UTC date will be used  in‐
2917              stead to avoid leaking information about your current location.
2918
2919
2920
2921       mail_check
2922              Type: number
2923              Default: 5
2924
2925              This variable configures how often (in seconds) mutt should look
2926              for new mail. Also see the $timeout variable.
2927
2928
2929
2930       mail_check_recent
2931              Type: boolean
2932              Default: yes
2933
2934              When set, Mutt will only notify you about new mail that has been
2935              received  since  the last time you opened the mailbox.  When un‐
2936              set, Mutt will notify you if any new mail exists in the mailbox,
2937              regardless of whether you have visited it recently.
2938
2939
2940
2941       mail_check_stats
2942              Type: boolean
2943              Default: no
2944
2945              When set, mutt will periodically calculate message statistics of
2946              a mailbox while polling for new mail.  It will check for unread,
2947              flagged,  and  total message counts.  (Note: IMAP mailboxes only
2948              support unread and total counts).
2949
2950              Because this operation is more  performance  intensive,  it  de‐
2951              faults    to    unset,    and    has    a    separate    option,
2952              $mail_check_stats_interval, to control how often to update these
2953              counts.
2954
2955              Message statistics can also be explicitly calculated by invoking
2956              the <check-stats> function.
2957
2958
2959
2960       mail_check_stats_interval
2961              Type: number
2962              Default: 60
2963
2964              When $mail_check_stats is set, this variable configures how  of‐
2965              ten (in seconds) mutt will update message counts.
2966
2967
2968
2969       mailcap_path
2970              Type: string
2971              Default: “”
2972
2973              This  variable  specifies which files to consult when attempting
2974              to display MIME bodies not directly supported by Mutt.  The  de‐
2975              fault  value is generated during startup: see the “mailcap” sec‐
2976              tion of the manual.
2977
2978
2979
2980       mailcap_sanitize
2981              Type: boolean
2982              Default: yes
2983
2984              If set, mutt will restrict possible characters in mailcap %  ex‐
2985              pandos  to  a  well-defined set of safe characters.  This is the
2986              safe setting, but we are not sure it doesn't break some more ad‐
2987              vanced MIME stuff.
2988
2989              DON'T  CHANGE  THIS  SETTING UNLESS YOU ARE REALLY SURE WHAT YOU
2990              ARE DOING!
2991
2992
2993
2994       maildir_header_cache_verify
2995              Type: boolean
2996              Default: yes
2997
2998              Check for Maildir unaware programs other than mutt having  modi‐
2999              fied maildir files when the header cache is in use.  This incurs
3000              one stat(2) per message every time the folder is  opened  (which
3001              can be very slow for NFS folders).
3002
3003
3004
3005       maildir_trash
3006              Type: boolean
3007              Default: no
3008
3009              If  set,  messages  marked  as  deleted  will  be saved with the
3010              maildir trashed flag instead of unlinked.  Note: this  only  ap‐
3011              plies  to  maildir-style mailboxes.  Setting it will have no ef‐
3012              fect on other mailbox types.
3013
3014
3015
3016       maildir_check_cur
3017              Type: boolean
3018              Default: no
3019
3020              If set, mutt will poll both the new and  cur  directories  of  a
3021              maildir  folder for new messages.  This might be useful if other
3022              programs interacting with the folder (e.g. dovecot)  are  moving
3023              new  messages  to the cur directory.  Note that setting this op‐
3024              tion may slow down polling for new messages  in  large  folders,
3025              since mutt has to scan all cur messages.
3026
3027
3028
3029       mark_macro_prefix
3030              Type: string
3031              Default: “'”
3032
3033              Prefix for macros created using mark-message.  A new macro auto‐
3034              matically generated with <mark-message>a will be  composed  from
3035              this prefix and the letter a.
3036
3037
3038
3039       mark_old
3040              Type: boolean
3041              Default: yes
3042
3043              Controls whether or not mutt marks new unread messages as old if
3044              you exit a mailbox without reading them.  With this option  set,
3045              the  next time you start mutt, the messages will show up with an
3046              “O” next to them in the index menu,  indicating  that  they  are
3047              old.
3048
3049
3050
3051       markers
3052              Type: boolean
3053              Default: yes
3054
3055              Controls  the display of wrapped lines in the internal pager. If
3056              set, a “+” marker is  displayed  at  the  beginning  of  wrapped
3057              lines.
3058
3059              Also see the $smart_wrap variable.
3060
3061
3062
3063       mask
3064              Type: regular expression
3065              Default: “!^\.[^.]”
3066
3067              A  regular  expression used in the file browser, optionally pre‐
3068              ceded by the not operator “!”.  Only  files  whose  names  match
3069              this mask will be shown. The match is always case-sensitive.
3070
3071
3072
3073       mbox
3074              Type: path
3075              Default: “~/mbox”
3076
3077              This   specifies  the  folder  into  which  read  mail  in  your
3078              $spoolfile folder will be appended.
3079
3080              Also see the $move variable.
3081
3082
3083
3084       mbox_type
3085              Type: folder magic
3086              Default: mbox
3087
3088              The default mailbox type used when creating new folders. May  be
3089              any of “mbox”, “MMDF”, “MH” and “Maildir”. This is overridden by
3090              the -m command-line option.
3091
3092
3093
3094       menu_context
3095              Type: number
3096              Default: 0
3097
3098              This variable controls the number of lines of context  that  are
3099              given when scrolling through menus. (Similar to $pager_context.)
3100
3101
3102
3103       menu_move_off
3104              Type: boolean
3105              Default: yes
3106
3107              When  unset, the bottom entry of menus will never scroll up past
3108              the bottom of the screen, unless there  are  less  entries  than
3109              lines.  When set, the bottom entry may move off the bottom.
3110
3111
3112
3113       menu_scroll
3114              Type: boolean
3115              Default: no
3116
3117              When  set,  menus  will be scrolled up or down one line when you
3118              attempt to move across a screen boundary.  If unset, the  screen
3119              is  cleared  and  the  next or previous page of the menu is dis‐
3120              played (useful for slow links to avoid many redraws).
3121
3122
3123
3124       message_cache_clean
3125              Type: boolean
3126              Default: no
3127
3128              If set, mutt will clean out obsolete entries  from  the  message
3129              cache  when  the mailbox is synchronized. You probably only want
3130              to set it every once in a while, since it can be a  little  slow
3131              (especially for large folders).
3132
3133
3134
3135       message_cachedir
3136              Type: path
3137              Default: “”
3138
3139              Set  this  to a directory and mutt will cache copies of messages
3140              from your IMAP and POP servers here. You are free to remove  en‐
3141              tries at any time.
3142
3143              When  setting  this variable to a directory, mutt needs to fetch
3144              every remote message only once and can perform  regular  expres‐
3145              sion searches as fast as for local folders.
3146
3147              Also see the $message_cache_clean variable.
3148
3149
3150
3151       message_format
3152              Type: string
3153              Default: “%s”
3154
3155              This  is  the  string displayed in the “attachment” menu for at‐
3156              tachments of type message/rfc822.  For a full listing of defined
3157              printf(3)-like sequences see the section on $index_format.
3158
3159
3160
3161       message_id_format
3162              Type: string
3163              Default: “<%z@%f>”
3164
3165              This  variable  describes the format of the Message-ID generated
3166              when sending messages.  Mutt 2.0 introduced a more compact  for‐
3167              mat,  but  this  variable  allows the ability to choose your own
3168              format.  The value may end in “|” to invoke an external  filter.
3169              See formatstrings-filters.
3170
3171              Please  note  that the Message-ID value follows a strict syntax,
3172              and you are responsible for ensuring correctness if  you  change
3173              this from the default.  In particular, the value must follow the
3174              syntax in RFC 5322: “”<” id-left ”@” id-right ”>””.   No  spaces
3175              are  allowed, and id-left should follow the dot-atom-text syntax
3176              in the RFC.  The id-right should generally be left at %f.
3177
3178              The old Message-ID format  can  be  used  by  setting  this  to:
3179<%Y%02m%02d%02H%02M%02S.G%c%p@%f>
3180
3181              The following printf(3)-style sequences are understood:
3182              %c     step counter looping from “A” to “Z”
3183              %d     current day of the month (GMT)
3184              %f     $hostname
3185              %H     current hour using a 24-hour clock (GMT)
3186              %m     current month number (GMT)
3187              %M     current minute of the hour (GMT)
3188              %p     pid of the running mutt process
3189              %r     3 bytes of pseudorandom data encoded in Base64
3190              %S     current second of the minute (GMT)
3191              %x     1 byte of pseudorandom data hex encoded (example: '1b')
3192              %Y     current year using 4 digits (GMT)
3193              %z     4  byte  timestamp + 8 bytes of pseudorandom data encoded
3194                     in Base64
3195
3196
3197       meta_key
3198              Type: boolean
3199              Default: no
3200
3201              If set, forces Mutt to interpret keystrokes with  the  high  bit
3202              (bit  8) set as if the user had pressed the Esc key and whatever
3203              key remains after having the high bit removed.  For example,  if
3204              the key pressed has an ASCII value of 0xf8, then this is treated
3205              as if the user had pressed Esc then “x”.  This  is  because  the
3206              result  of removing the high bit from 0xf8 is 0x78, which is the
3207              ASCII character “x”.
3208
3209
3210
3211       metoo
3212              Type: boolean
3213              Default: no
3214
3215              If unset, Mutt will remove your address  (see  the  “alternates”
3216              command) from the list of recipients when replying to a message.
3217
3218
3219
3220       mh_purge
3221              Type: boolean
3222              Default: no
3223
3224              When  unset,  mutt  will  mimic mh's behavior and rename deleted
3225              messages to ,<old file name> in mh  folders  instead  of  really
3226              deleting  them.  This  leaves the message on disk but makes pro‐
3227              grams reading the folder ignore it. If the variable is set,  the
3228              message files will simply be deleted.
3229
3230              This option is similar to $maildir_trash for Maildir folders.
3231
3232
3233
3234       mh_seq_flagged
3235              Type: string
3236              Default: “flagged”
3237
3238              The name of the MH sequence used for flagged messages.
3239
3240
3241
3242       mh_seq_replied
3243              Type: string
3244              Default: “replied”
3245
3246              The name of the MH sequence used to tag replied messages.
3247
3248
3249
3250       mh_seq_unseen
3251              Type: string
3252              Default: “unseen”
3253
3254              The name of the MH sequence used for unseen messages.
3255
3256
3257
3258       mime_forward
3259              Type: quadoption
3260              Default: no
3261
3262              When  set,  the message you are forwarding will be attached as a
3263              separate message/rfc822 MIME part instead  of  included  in  the
3264              main  body  of  the message.  This is useful for forwarding MIME
3265              messages so the receiver can properly view the message as it was
3266              delivered  to  you.  If  you like to switch between MIME and not
3267              MIME from mail  to  mail,  set  this  variable  to  “ask-no”  or
3268              “ask-yes”.
3269
3270              Also see $forward_decode and $mime_forward_decode.
3271
3272
3273
3274       mime_forward_decode
3275              Type: boolean
3276              Default: no
3277
3278              Controls  the  decoding of complex MIME messages into text/plain
3279              when forwarding a message while $mime_forward is set.  Otherwise
3280              $forward_decode is used instead.
3281
3282
3283
3284       mime_forward_rest
3285              Type: quadoption
3286              Default: yes
3287
3288              When  forwarding multiple attachments of a MIME message from the
3289              attachment menu, attachments which cannot be decoded in  a  rea‐
3290              sonable manner will be attached to the newly composed message if
3291              this option is set.
3292
3293
3294
3295       mime_type_query_command
3296              Type: string
3297              Default: “”
3298
3299              This specifies a command to run, to determine the mime type of a
3300              new    attachment    when    composing    a   message.    Unless
3301              $mime_type_query_first is set, this will only be run if the  at‐
3302              tachment's extension is not found in the mime.types file.
3303
3304              The  string  may  contain a “%s”, which will be substituted with
3305              the attachment filename.  Mutt will add quotes around the string
3306              substituted  for  “%s”  automatically according to shell quoting
3307              rules, so you should avoid adding your own.  If no “%s” is found
3308              in  the  string, Mutt will append the attachment filename to the
3309              end of the string.
3310
3311              The command should output a single line containing  the  attach‐
3312              ment's mime type.
3313
3314              Suggested values are “xdg-mime query filetype” or “file -bi”.
3315
3316
3317
3318       mime_type_query_first
3319              Type: boolean
3320              Default: no
3321
3322              When  set,  the  $mime_type_query_command will be run before the
3323              mime.types lookup.
3324
3325
3326
3327       mix_entry_format
3328              Type: string
3329              Default: “%4n %c %-16s %a”
3330
3331              This variable describes the format of a  remailer  line  on  the
3332              mixmaster  chain selection screen.  The following printf(3)-like
3333              sequences are supported:
3334              %n     The running number on the menu.
3335              %c     Remailer capabilities.
3336              %s     The remailer's short name.
3337              %a     The remailer's e-mail address.
3338
3339              (Mixmaster only)
3340
3341
3342
3343       mixmaster
3344              Type: path
3345              Default: “mixmaster”
3346
3347              This variable contains the path to the Mixmaster binary on  your
3348              system.   It  is  used with various sets of parameters to gather
3349              the list of known remailers,  and  to  finally  send  a  message
3350              through the mixmaster chain. (Mixmaster only)
3351
3352
3353
3354       move
3355              Type: quadoption
3356              Default: no
3357
3358              Controls  whether  or not Mutt will move read messages from your
3359              spool mailbox to your $mbox mailbox, or as a result of a  “mbox-
3360              hook” command.
3361
3362
3363
3364       muttlisp_inline_eval
3365              Type: boolean
3366              Default: no
3367
3368              If  set,  Mutt  will evaluate bare parenthesis arguments to com‐
3369              mands as MuttLisp expressions.
3370
3371
3372
3373       narrow_tree
3374              Type: boolean
3375              Default: no
3376
3377              This variable, when set, makes the thread tree narrower,  allow‐
3378              ing deeper threads to fit on the screen.
3379
3380
3381
3382       net_inc
3383              Type: number
3384              Default: 10
3385
3386              Operations  that  expect to transfer a large amount of data over
3387              the network will update their progress every $net_inc kilobytes.
3388              If set to 0, no progress messages will be displayed.
3389
3390              See also $read_inc, $write_inc and $net_inc.
3391
3392
3393
3394       new_mail_command
3395              Type: path
3396              Default: “”
3397
3398              If  set,  Mutt will call this command after a new message is re‐
3399              ceived.  See the $status_format  documentation  for  the  values
3400              that can be formatted into this command.
3401
3402
3403
3404       pager
3405              Type: path
3406              Default: “builtin”
3407
3408              This  variable  specifies  which  pager you would like to use to
3409              view messages. The value “builtin” means  to  use  the  built-in
3410              pager,  otherwise  this  variable should specify the pathname of
3411              the external pager you would like to use.
3412
3413              The string may contain a “%s”, which will  be  substituted  with
3414              the generated message filename.  Mutt will add quotes around the
3415              string substituted for “%s”  automatically  according  to  shell
3416              quoting  rules, so you should avoid adding your own.  If no “%s”
3417              is found in the string, Mutt will append the message filename to
3418              the end of the string.
3419
3420              Using  an external pager may have some disadvantages: Additional
3421              keystrokes are necessary because you can't call  mutt  functions
3422              directly  from  the pager, and screen resizes cause lines longer
3423              than the screen width to be badly formatted in the help menu.
3424
3425              When using an external pager, also see $prompt_after  which  de‐
3426              faults set.
3427
3428
3429
3430       pager_context
3431              Type: number
3432              Default: 0
3433
3434              This  variable  controls the number of lines of context that are
3435              given when displaying the next or previous page in the  internal
3436              pager.   By  default,  Mutt will display the line after the last
3437              one on the screen at the top of the next page (0 lines  of  con‐
3438              text).
3439
3440              This  variable  also  specifies  the amount of context given for
3441              search results. If positive, this many lines will be  given  be‐
3442              fore a match, if 0, the match will be top-aligned.
3443
3444
3445
3446       pager_format
3447              Type: string
3448              Default: “-%Z- %C/%m: %-20.20n   %s%*  -- (%P)”
3449
3450              This  variable controls the format of the one-line message “sta‐
3451              tus” displayed before each message in either the internal or  an
3452              external  pager.   The  valid  sequences  are listed in the $in‐
3453              dex_format section.
3454
3455
3456
3457       pager_index_lines
3458              Type: number
3459              Default: 0
3460
3461              Determines the number of lines of a mini-index  which  is  shown
3462              when  in the pager.  The current message, unless near the top or
3463              bottom of the folder, will be roughly one third of the way  down
3464              this mini-index, giving the reader the context of a few messages
3465              before and after the message.  This is useful, for  example,  to
3466              determine  how  many  messages  remain to be read in the current
3467              thread.  One of the lines is reserved for the  status  bar  from
3468              the  index,  so a setting of 6 will only show 5 lines of the ac‐
3469              tual index.  A value of 0 results in no index being  shown.   If
3470              the  number  of  messages  in  the  current  folder is less than
3471              $pager_index_lines, then the index will only use as  many  lines
3472              as it needs.
3473
3474
3475
3476       pager_skip_quoted_context
3477              Type: number
3478              Default: 0
3479
3480              Determines the number of lines of context to show before the un‐
3481              quoted text when using <skip-quoted>. When  set  to  a  positive
3482              number  at  most  that many lines of the previous quote are dis‐
3483              played. If the previous quote is shorter the whole quote is dis‐
3484              played.
3485
3486
3487
3488       pager_stop
3489              Type: boolean
3490              Default: no
3491
3492              When  set,  the internal-pager will not move to the next message
3493              when you are at the end of a message and invoke the  <next-page>
3494              function.
3495
3496
3497
3498       pattern_format
3499              Type: string
3500              Default: “%2n %-15e  %d”
3501
3502              This  variable  describes the format of the “pattern completion”
3503              menu. The following printf(3)-style sequences are understood:
3504              %d     pattern description
3505              %e     pattern expression
3506              %n     index number
3507
3508       pgp_auto_decode
3509              Type: boolean
3510              Default: no
3511
3512              If set, mutt will automatically attempt to  decrypt  traditional
3513              PGP messages whenever the user performs an operation which ordi‐
3514              narily would result in the contents of the message  being  oper‐
3515              ated  on.   For  example, if the user displays a pgp-traditional
3516              message which has not been manually checked with the <check-tra‐
3517              ditional-pgp>  function,  mutt will automatically check the mes‐
3518              sage for traditional pgp.
3519
3520
3521
3522       pgp_autoinline
3523              Type: boolean
3524              Default: no
3525
3526              This option controls whether  Mutt  generates  old-style  inline
3527              (traditional)  PGP  encrypted  or  signed messages under certain
3528              circumstances.  This can be overridden by use of the  pgp  menu,
3529              when inline is not required.  The GPGME backend does not support
3530              this option.
3531
3532              Note that Mutt might automatically  use  PGP/MIME  for  messages
3533              which consist of more than a single MIME part.  Mutt can be con‐
3534              figured to ask before  sending  PGP/MIME  messages  when  inline
3535              (traditional) would not work.
3536
3537              Also see the $pgp_mime_auto variable.
3538
3539              Also  note  that  using  the  old-style  PGP  message  format is
3540              strongly deprecated.  (PGP only)
3541
3542
3543
3544       pgp_check_exit
3545              Type: boolean
3546              Default: yes
3547
3548              If set, mutt will check the exit code of the PGP subprocess when
3549              signing or encrypting.  A non-zero exit code means that the sub‐
3550              process failed.  (PGP only)
3551
3552
3553
3554       pgp_check_gpg_decrypt_status_fd
3555              Type: boolean
3556              Default: yes
3557
3558              If set, mutt will check the status  file  descriptor  output  of
3559              $pgp_decrypt_command  and  $pgp_decode_command  for GnuPG status
3560              codes indicating successful decryption.  This will check for the
3561              presence  of  DECRYPTION_OKAY, absence of DECRYPTION_FAILED, and
3562              that all  PLAINTEXT  occurs  between  the  BEGIN_DECRYPTION  and
3563              END_DECRYPTION status codes.
3564
3565              If  unset,  mutt will instead match the status fd output against
3566              $pgp_decryption_okay.  (PGP only)
3567
3568
3569
3570       pgp_clearsign_command
3571              Type: string
3572              Default: “”
3573
3574              This format is used to create  an  old-style  “clearsigned”  PGP
3575              message.   Note  that  the use of this format is strongly depre‐
3576              cated.
3577
3578              This is a format string, see the $pgp_decode_command command for
3579              possible printf(3)-like sequences.  (PGP only)
3580
3581
3582
3583       pgp_decode_command
3584              Type: string
3585              Default: “”
3586
3587              This  format strings specifies a command which is used to decode
3588              application/pgp attachments.
3589
3590              The PGP command formats have their own set of printf(3)-like se‐
3591              quences:
3592              %p     Expands  to  PGPPASSFD=0 when a pass phrase is needed, to
3593                     an empty string otherwise. Note: This may be used with  a
3594                     %? construct.
3595              %f     Expands to the name of a file containing a message.
3596              %s     Expands  to  the  name of a file containing the signature
3597                     part
3598                                of a multipart/signed attachment when  verify‐
3599                     ing it.
3600              %a     The  value of $pgp_sign_as if set, otherwise the value of
3601                     $pgp_default_key.
3602              %r     One or more key IDs (or fingerprints if available).
3603
3604              For examples on how to configure these formats for  the  various
3605              versions  of  PGP which are floating around, see the pgp and gpg
3606              sample configuration files in the  samples/  subdirectory  which
3607              has  been  installed on your system alongside the documentation.
3608              (PGP only)
3609
3610
3611
3612       pgp_decrypt_command
3613              Type: string
3614              Default: “”
3615
3616              This command is used to decrypt a PGP encrypted message.
3617
3618              This is a format string, see the $pgp_decode_command command for
3619              possible printf(3)-like sequences.  (PGP only)
3620
3621
3622
3623       pgp_decryption_okay
3624              Type: regular expression
3625              Default: “”
3626
3627              If  you assign text to this variable, then an encrypted PGP mes‐
3628              sage is only considered successfully  decrypted  if  the  output
3629              from  $pgp_decrypt_command  contains  the text.  This is used to
3630              protect against a spoofed encrypted message, with  multipart/en‐
3631              crypted  headers but containing a block that is not actually en‐
3632              crypted.  (e.g. simply signed and ascii armored text).
3633
3634              Note that if $pgp_check_gpg_decrypt_status_fd is set, this vari‐
3635              able is ignored.  (PGP only)
3636
3637
3638
3639       pgp_default_key
3640              Type: string
3641              Default: “”
3642
3643              This is the default key-pair to use for PGP operations.  It will
3644              be used for encryption (see $postpone_encrypt and  $pgp_self_en‐
3645              crypt).
3646
3647              It will also be used for signing unless $pgp_sign_as is set.
3648
3649              The  (now  deprecated)  pgp_self_encrypt_as is an alias for this
3650              variable, and should no longer be used.  (PGP only)
3651
3652
3653
3654       pgp_encrypt_only_command
3655              Type: string
3656              Default: “”
3657
3658              This command is used to encrypt a body part without signing it.
3659
3660              This is a format string, see the $pgp_decode_command command for
3661              possible printf(3)-like sequences.  (PGP only)
3662
3663
3664
3665       pgp_encrypt_sign_command
3666              Type: string
3667              Default: “”
3668
3669              This command is used to both sign and encrypt a body part.
3670
3671              This is a format string, see the $pgp_decode_command command for
3672              possible printf(3)-like sequences.  (PGP only)
3673
3674
3675
3676       pgp_entry_format
3677              Type: string
3678              Default: “%4n %t%f %4l/0x%k %-4a %2c %u”
3679
3680              This variable allows you to customize the PGP key selection menu
3681              to your personal taste. This string is similar to $index_format,
3682              but has its own set of printf(3)-like sequences:
3683              %n     number
3684              %k     key id
3685              %u     user id
3686              %a     algorithm
3687              %l     key length
3688              %f     flags
3689              %c     capabilities
3690              %t     trust/validity of the key-uid association
3691              %[<s>] date of the key where <s> is an strftime(3) expression
3692
3693              (PGP only)
3694
3695
3696
3697       pgp_export_command
3698              Type: string
3699              Default: “”
3700
3701              This command is used to export a public key from the user's  key
3702              ring.
3703
3704              This is a format string, see the $pgp_decode_command command for
3705              possible printf(3)-like sequences.  (PGP only)
3706
3707
3708
3709       pgp_getkeys_command
3710              Type: string
3711              Default: “”
3712
3713              This command is invoked whenever Mutt needs to fetch the  public
3714              key  associated  with  an  email address.  Of the sequences sup‐
3715              ported by $pgp_decode_command, %r is the only printf(3)-like se‐
3716              quence  used  with  this format.  Note that in this case, %r ex‐
3717              pands to the email address, not the public key ID (the key ID is
3718              unknown,  which  is  why  Mutt  is invoking this command).  (PGP
3719              only)
3720
3721
3722
3723       pgp_good_sign
3724              Type: regular expression
3725              Default: “”
3726
3727              If you assign a text to this variable, then a PGP  signature  is
3728              only  considered verified if the output from $pgp_verify_command
3729              contains the text. Use this variable if the exit code  from  the
3730              command is 0 even for bad signatures.  (PGP only)
3731
3732
3733
3734       pgp_ignore_subkeys
3735              Type: boolean
3736              Default: yes
3737
3738              Setting this variable will cause Mutt to ignore OpenPGP subkeys.
3739              Instead, the principal key will inherit the  subkeys'  capabili‐
3740              ties.   Unset this if you want to play interesting key selection
3741              games.  (PGP only)
3742
3743
3744
3745       pgp_import_command
3746              Type: string
3747              Default: “”
3748
3749              This command is used to import a key from  a  message  into  the
3750              user's public key ring.
3751
3752              This is a format string, see the $pgp_decode_command command for
3753              possible printf(3)-like sequences.  (PGP only)
3754
3755
3756
3757       pgp_list_pubring_command
3758              Type: string
3759              Default: “”
3760
3761              This command is used to list the  public  key  ring's  contents.
3762              The output format must be analogous to the one used by
3763
3764
3765              gpg --list-keys --with-colons --with-fingerprint
3766
3767
3768              This  format is also generated by the mutt_pgpring utility which
3769              comes with mutt.
3770
3771              Note: gpg's fixed-list-mode option should not be used.  It  pro‐
3772              duces  a  different date format which may result in mutt showing
3773              incorrect key generation dates.
3774
3775              This is a format string, see the $pgp_decode_command command for
3776              possible  printf(3)-like  sequences.  Note that in this case, %r
3777              expands to the search string, which is a list  of  one  or  more
3778              quoted values such as email address, name, or keyid.  (PGP only)
3779
3780
3781
3782       pgp_list_secring_command
3783              Type: string
3784              Default: “”
3785
3786              This  command  is  used  to list the secret key ring's contents.
3787              The output format must be analogous to the one used by:
3788
3789
3790              gpg --list-keys --with-colons --with-fingerprint
3791
3792
3793              This format is also generated by the mutt_pgpring utility  which
3794              comes with mutt.
3795
3796              Note:  gpg's fixed-list-mode option should not be used.  It pro‐
3797              duces a different date format which may result in  mutt  showing
3798              incorrect key generation dates.
3799
3800              This is a format string, see the $pgp_decode_command command for
3801              possible printf(3)-like sequences.  Note that in this  case,  %r
3802              expands  to  the  search  string, which is a list of one or more
3803              quoted values such as email address, name, or keyid.  (PGP only)
3804
3805
3806
3807       pgp_long_ids
3808              Type: boolean
3809              Default: yes
3810
3811              If set, use 64 bit PGP key IDs, if unset use the normal  32  bit
3812              key  IDs.  NOTE: Internally, Mutt has transitioned to using fin‐
3813              gerprints (or long key IDs as a fallback).  This option now only
3814              controls  the display of key IDs in the key selection menu and a
3815              few other places.  (PGP only)
3816
3817
3818
3819       pgp_mime_auto
3820              Type: quadoption
3821              Default: ask-yes
3822
3823              This option controls whether Mutt will prompt you for  automati‐
3824              cally  sending  a (signed/encrypted) message using PGP/MIME when
3825              inline (traditional) fails (for any reason).
3826
3827              Also note  that  using  the  old-style  PGP  message  format  is
3828              strongly deprecated.  (PGP only)
3829
3830
3831
3832       pgp_replyinline
3833              Type: boolean
3834              Default: no
3835
3836              Setting  this variable will cause Mutt to always attempt to cre‐
3837              ate an inline (traditional) message when replying to  a  message
3838              which is PGP encrypted/signed inline.  This can be overridden by
3839              use of the pgp menu, when inline is not required.   This  option
3840              does not automatically detect if the (replied-to) message is in‐
3841              line;  instead  it  relies  on  Mutt  internals  for  previously
3842              checked/flagged messages.
3843
3844              Note  that  Mutt  might  automatically use PGP/MIME for messages
3845              which consist of more than a single MIME part.  Mutt can be con‐
3846              figured  to  ask  before  sending  PGP/MIME messages when inline
3847              (traditional) would not work.
3848
3849              Also see the $pgp_mime_auto variable.
3850
3851              Also note  that  using  the  old-style  PGP  message  format  is
3852              strongly deprecated.  (PGP only)
3853
3854
3855
3856       pgp_retainable_sigs
3857              Type: boolean
3858              Default: no
3859
3860              If  set,  signed  and  encrypted messages will consist of nested
3861              multipart/signed and multipart/encrypted body parts.
3862
3863              This is useful for applications like encrypted and signed  mail‐
3864              ing  lists,  where  the outer layer (multipart/encrypted) can be
3865              easily removed, while the inner  multipart/signed  part  is  re‐
3866              tained.  (PGP only)
3867
3868
3869
3870       pgp_self_encrypt
3871              Type: boolean
3872              Default: yes
3873
3874              When  set,  PGP  encrypted messages will also be encrypted using
3875              the key in $pgp_default_key.  (PGP only)
3876
3877
3878
3879       pgp_show_unusable
3880              Type: boolean
3881              Default: yes
3882
3883              If set, mutt will display non-usable keys on the PGP key  selec‐
3884              tion menu.  This includes keys which have been revoked, have ex‐
3885              pired, or have been marked as  “disabled”  by  the  user.   (PGP
3886              only)
3887
3888
3889
3890       pgp_sign_as
3891              Type: string
3892              Default: “”
3893
3894              If  you have a different key pair to use for signing, you should
3895              set this to the signing key.  Most people will only need to  set
3896              $pgp_default_key.  It is recommended that you use the keyid form
3897              to specify your key (e.g. 0x00112233).  (PGP only)
3898
3899
3900
3901       pgp_sign_command
3902              Type: string
3903              Default: “”
3904
3905              This command is used to create the detached PGP signature for  a
3906              multipart/signed PGP/MIME body part.
3907
3908              This is a format string, see the $pgp_decode_command command for
3909              possible printf(3)-like sequences.  (PGP only)
3910
3911
3912
3913       pgp_sort_keys
3914              Type: sort order
3915              Default: address
3916
3917              Specifies how the entries in the pgp menu are sorted.  The  fol‐
3918              lowing are legal values:
3919              address
3920                     sort alphabetically by user id
3921              keyid  sort alphabetically by key id
3922              date   sort by key creation date
3923              trust  sort by the trust of the key
3924
3925              If  you prefer reverse order of the above values, prefix it with
3926              “reverse-”.  (PGP only)
3927
3928
3929
3930       pgp_strict_enc
3931              Type: boolean
3932              Default: yes
3933
3934              If set, Mutt will automatically encode PGP/MIME signed  messages
3935              as  quoted-printable.   Please note that unsetting this variable
3936              may lead to problems with non-verifyable PGP signatures, so only
3937              change this if you know what you are doing.  (PGP only)
3938
3939
3940
3941       pgp_timeout
3942              Type: number (long)
3943              Default: 300
3944
3945              The  number  of seconds after which a cached passphrase will ex‐
3946              pire if not used.  (PGP only)
3947
3948
3949
3950       pgp_use_gpg_agent
3951              Type: boolean
3952              Default: no
3953
3954              If set, mutt expects a gpg-agent(1) process will handle  private
3955              key  passphrase  prompts.   If  unset,  mutt will prompt for the
3956              passphrase and pass it via stdin to the pgp command.
3957
3958              Note that as of version 2.1, GnuPG automatically spawns an agent
3959              and requires the agent be used for passphrase management.  Since
3960              that version is increasingly prevalent, this  variable  now  de‐
3961              faults set.
3962
3963              Mutt  works with a GUI or curses pinentry program.  A TTY pinen‐
3964              try should not be used.
3965
3966              If you are using an older version of GnuPG without an agent run‐
3967              ning,  or  another encryption program without an agent, you will
3968              need to unset this variable.  (PGP only)
3969
3970
3971
3972       pgp_verify_command
3973              Type: string
3974              Default: “”
3975
3976              This command is used to verify PGP signatures.
3977
3978              This is a format string, see the $pgp_decode_command command for
3979              possible printf(3)-like sequences.  (PGP only)
3980
3981
3982
3983       pgp_verify_key_command
3984              Type: string
3985              Default: “”
3986
3987              This  command is used to verify key information from the key se‐
3988              lection menu.
3989
3990              This is a format string, see the $pgp_decode_command command for
3991              possible printf(3)-like sequences.  (PGP only)
3992
3993
3994
3995       pipe_decode
3996              Type: boolean
3997              Default: no
3998
3999              Used  in  connection with the <pipe-message> function.  When un‐
4000              set, Mutt will pipe the messages without any preprocessing. When
4001              set, Mutt will attempt to decode the messages first.
4002
4003              Also  see $pipe_decode_weed, which controls whether headers will
4004              be weeded when this is set.
4005
4006
4007
4008       pipe_decode_weed
4009              Type: boolean
4010              Default: yes
4011
4012              For <pipe-message>, when $pipe_decode is set, this further  con‐
4013              trols whether Mutt will weed headers.
4014
4015
4016
4017       pipe_sep
4018              Type: string
4019              Default: “\n”
4020
4021              The  separator  to  add  between  messages when piping a list of
4022              tagged messages to an external Unix command.
4023
4024
4025
4026       pipe_split
4027              Type: boolean
4028              Default: no
4029
4030              Used in connection with the  <pipe-message>  function  following
4031              <tag-prefix>.   If this variable is unset, when piping a list of
4032              tagged messages Mutt will concatenate the messages and will pipe
4033              them  all  concatenated.   When set, Mutt will pipe the messages
4034              one by one.  In both cases the messages are piped in the current
4035              sorted  order,  and  the $pipe_sep separator is added after each
4036              message.
4037
4038
4039
4040       pop_auth_try_all
4041              Type: boolean
4042              Default: yes
4043
4044              If set, Mutt will  try  all  available  authentication  methods.
4045              When  unset,  Mutt  will  only fall back to other authentication
4046              methods if the previous methods are unavailable. If a method  is
4047              available but authentication fails, Mutt will not connect to the
4048              POP server.
4049
4050
4051
4052       pop_authenticators
4053              Type: string
4054              Default: “”
4055
4056              This is a colon-delimited list of  authentication  methods  mutt
4057              may attempt to use to log in to an POP server, in the order mutt
4058              should try them.   Authentication  methods  are  either  “user”,
4059              “apop”  or  any  SASL  mechanism, e.g. “digest-md5”, “gssapi” or
4060              “cram-md5”.  This option is case-insensitive. If this option  is
4061              unset  (the default) mutt will try all available methods, in or‐
4062              der from most-secure to least-secure.
4063
4064              Example:
4065
4066
4067              set pop_authenticators=”digest-md5:apop:user”
4068
4069
4070
4071
4072       pop_checkinterval
4073              Type: number
4074              Default: 60
4075
4076              This variable configures how often (in seconds) mutt should look
4077              for  new  mail  in the currently selected mailbox if it is a POP
4078              mailbox.
4079
4080
4081
4082       pop_delete
4083              Type: quadoption
4084              Default: ask-no
4085
4086              If set, Mutt will delete successfully downloaded  messages  from
4087              the  POP  server when using the <fetch-mail> function.  When un‐
4088              set, Mutt will download messages but also leave them on the  POP
4089              server.
4090
4091
4092
4093       pop_host
4094              Type: string
4095              Default: “”
4096
4097              The  name of your POP server for the <fetch-mail> function.  You
4098              can also specify an alternative  port,  username  and  password,
4099              i.e.:
4100
4101
4102              [pop[s]://][username[:password]@]popserver[:port]
4103
4104
4105              where “[...]” denotes an optional part.
4106
4107
4108
4109       pop_last
4110              Type: boolean
4111              Default: no
4112
4113              If  this  variable  is  set, mutt will try to use the “LAST” POP
4114              command for retrieving only unread messages from the POP  server
4115              when using the <fetch-mail> function.
4116
4117
4118
4119       pop_oauth_refresh_command
4120              Type: string
4121              Default: “”
4122
4123              The command to run to generate an OAUTH refresh token for autho‐
4124              rizing your connection to your POP server.  This command will be
4125              run  on  every  connection attempt that uses the OAUTHBEARER au‐
4126              thentication mechanism.  See “oauth” for details.
4127
4128
4129
4130       pop_pass
4131              Type: string
4132              Default: “”
4133
4134              Specifies the password for your POP  account.   If  unset,  Mutt
4135              will prompt you for your password when you open a POP mailbox.
4136
4137              Warning:  you  should  only  use  this  option when you are on a
4138              fairly secure machine, because the superuser can read your  mut‐
4139              trc even if you are the only one who can read the file.
4140
4141
4142
4143       pop_reconnect
4144              Type: quadoption
4145              Default: ask-yes
4146
4147              Controls  whether  or  not Mutt will try to reconnect to the POP
4148              server if the connection is lost.
4149
4150
4151
4152       pop_user
4153              Type: string
4154              Default: “”
4155
4156              Your login name on the POP server.
4157
4158              This variable defaults to your user name on the local machine.
4159
4160
4161
4162       post_indent_string
4163              Type: string
4164              Default: “”
4165
4166              Similar to the $attribution  variable,  Mutt  will  append  this
4167              string  after  the inclusion of a message which is being replied
4168              to.  For a full listing of defined printf(3)-like sequences  see
4169              the section on $index_format.
4170
4171
4172
4173       postpone
4174              Type: quadoption
4175              Default: ask-yes
4176
4177              Controls  whether  or  not  messages are saved in the $postponed
4178              mailbox when you elect not to send immediately.
4179
4180              Also see the $recall variable.
4181
4182
4183
4184       postponed
4185              Type: path
4186              Default: “~/postponed”
4187
4188              Mutt allows you to indefinitely  “postpone  sending  a  message”
4189              which  you  are editing.  When you choose to postpone a message,
4190              Mutt saves it in the mailbox specified by this variable.
4191
4192              Also see the $postpone variable.
4193
4194
4195
4196       postpone_encrypt
4197              Type: boolean
4198              Default: no
4199
4200              When set, postponed messages that are marked for encryption will
4201              be  self-encrypted.   Mutt  will  first try to encrypt using the
4202              value specified in $pgp_default_key or  $smime_default_key.   If
4203              those  are  not  set,  it  will try the deprecated $postpone_en‐
4204              crypt_as.  (Crypto only)
4205
4206
4207
4208       postpone_encrypt_as
4209              Type: string
4210              Default: “”
4211
4212              This is a deprecated fall-back variable  for  $postpone_encrypt.
4213              Please  use  $pgp_default_key  or  $smime_default_key.   (Crypto
4214              only)
4215
4216
4217
4218       preconnect
4219              Type: string
4220              Default: “”
4221
4222              If set, a shell command to be executed if mutt fails  to  estab‐
4223              lish  a  connection to the server. This is useful for setting up
4224              secure connections, e.g. with ssh(1). If the command  returns  a
4225              nonzero status, mutt gives up opening the server. Example:
4226
4227
4228              set preconnect=”ssh -f -q -L 1234:mailhost.net:143 mailhost.net \
4229              sleep 20 < /dev/null > /dev/null”
4230
4231
4232              Mailbox  “foo”  on “mailhost.net” can now be reached as “{local‐
4233              host:1234}foo”.
4234
4235              Note: For this example to work, you must be able to  log  in  to
4236              the remote machine without having to enter a password.
4237
4238
4239
4240       print
4241              Type: quadoption
4242              Default: ask-no
4243
4244              Controls  whether  or  not Mutt really prints messages.  This is
4245              set to “ask-no” by default, because some people accidentally hit
4246              “p” often.
4247
4248
4249
4250       print_command
4251              Type: path
4252              Default: “lpr”
4253
4254              This  specifies  the  command  pipe that should be used to print
4255              messages.
4256
4257
4258
4259       print_decode
4260              Type: boolean
4261              Default: yes
4262
4263              Used in connection with the <print-message> function.   If  this
4264              option is set, the message is decoded before it is passed to the
4265              external command specified by $print_command.  If this option is
4266              unset,  no processing will be applied to the message when print‐
4267              ing it.  The latter setting may be useful if you are using  some
4268              advanced  printer filter which is able to properly format e-mail
4269              messages for printing.
4270
4271              Also see $print_decode_weed, which controls whether headers will
4272              be weeded when this is set.
4273
4274
4275
4276       print_decode_weed
4277              Type: boolean
4278              Default: yes
4279
4280              For  <print-message>,  when  $print_decode  is set, this further
4281              controls whether Mutt will weed headers.
4282
4283
4284
4285       print_split
4286              Type: boolean
4287              Default: no
4288
4289              Used in connection with the <print-message> function.   If  this
4290              option  is  set, the command specified by $print_command is exe‐
4291              cuted once for each message which is to be printed.  If this op‐
4292              tion  is  unset, the command specified by $print_command is exe‐
4293              cuted only once, and all the messages are concatenated,  with  a
4294              form feed as the message separator.
4295
4296              Those  who use the enscript(1) program's mail-printing mode will
4297              most likely want to set this option.
4298
4299
4300
4301       prompt_after
4302              Type: boolean
4303              Default: yes
4304
4305              If you use an external $pager, setting this variable will  cause
4306              Mutt  to  prompt  you  for a command when the pager exits rather
4307              than returning to the index menu.  If unset, Mutt will return to
4308              the index menu when the external pager exits.
4309
4310
4311
4312       query_command
4313              Type: path
4314              Default: “”
4315
4316              This  specifies  the  command Mutt will use to make external ad‐
4317              dress queries.  The string may contain a  “%s”,  which  will  be
4318              substituted with the query string the user types.  Mutt will add
4319              quotes around the string substituted for “%s” automatically  ac‐
4320              cording  to shell quoting rules, so you should avoid adding your
4321              own.  If no “%s” is found in the string, Mutt  will  append  the
4322              user's query to the end of the string.  See “query” for more in‐
4323              formation.
4324
4325
4326
4327       query_format
4328              Type: string
4329              Default: “%4c %t %-25.25a %-25.25n %?e?(%e)?”
4330
4331              This variable describes the format of the “query” menu. The fol‐
4332              lowing printf(3)-style sequences are understood:
4333              %a     destination address
4334              %c     current entry number
4335              %e     extra information *
4336              %n     destination name
4337              %t     “*” if current entry is tagged, a space otherwise
4338              %>X    right justify the rest of the string and pad with “X”
4339              %|X    pad to the end of the line with “X”
4340              %*X    soft-fill with character “X” as pad
4341
4342              For  an  explanation of “soft-fill”, see the $index_format docu‐
4343              mentation.
4344
4345              * = can be optionally printed if nonzero, see the $status_format
4346              documentation.
4347
4348
4349
4350       quit
4351              Type: quadoption
4352              Default: yes
4353
4354              This  variable  controls whether “quit” and “exit” actually quit
4355              from mutt.  If this option is set, they do quit, if it is unset,
4356              they  have no effect, and if it is set to ask-yes or ask-no, you
4357              are prompted for confirmation when you try to quit.
4358
4359
4360
4361       quote_regexp
4362              Type: regular expression
4363              Default: “^([ \t]*[|>:}#])+”
4364
4365              A regular expression used in the  internal  pager  to  determine
4366              quoted  sections  of  text in the body of a message. Quoted text
4367              may be filtered out using the <toggle-quoted> command,  or  col‐
4368              ored according to the “color quoted” family of directives.
4369
4370              Higher  levels  of  quoting  may  be colored differently (“color
4371              quoted1”, “color quoted2”, etc.). The quoting  level  is  deter‐
4372              mined  by  removing the last character from the matched text and
4373              recursively reapplying the regular expression until it fails  to
4374              produce a match.
4375
4376              Match  detection  may  be overridden by the $smileys regular ex‐
4377              pression.
4378
4379
4380
4381       read_inc
4382              Type: number
4383              Default: 10
4384
4385              If set to a value greater than 0, Mutt will display  which  mes‐
4386              sage  it is currently on when reading a mailbox or when perform‐
4387              ing search actions such as search  and  limit.  The  message  is
4388              printed  after  this  many  messages  have been read or searched
4389              (e.g., if set to 25, Mutt will print a message  when  it  is  at
4390              message  25,  and  then again when it gets to message 50).  This
4391              variable is meant to indicate progress when reading or searching
4392              large mailboxes which may take some time.  When set to 0, only a
4393              single message will appear before the reading the mailbox.
4394
4395              Also see the $write_inc, $net_inc and  $time_inc  variables  and
4396              the  “tuning”  section  of the manual for performance considera‐
4397              tions.
4398
4399
4400
4401       read_only
4402              Type: boolean
4403              Default: no
4404
4405              If set, all folders are opened in read-only mode.
4406
4407
4408
4409       realname
4410              Type: string
4411              Default: “”
4412
4413              This variable specifies what “real” or “personal” name should be
4414              used when sending messages.
4415
4416              By default, this is the GECOS field from /etc/passwd.  Note that
4417              this variable will not be used when the user has set a real name
4418              in the $from variable.
4419
4420
4421
4422       recall
4423              Type: quadoption
4424              Default: ask-yes
4425
4426              Controls  whether  or  not  Mutt recalls postponed messages when
4427              composing a new message.
4428
4429              Setting this variable to yes is not generally useful,  and  thus
4430              not recommended.  Note that the <recall-message> function can be
4431              used to manually recall postponed messages.
4432
4433              Also see $postponed variable.
4434
4435
4436
4437       record
4438              Type: path
4439              Default: “~/sent”
4440
4441              This specifies the file into which your outgoing messages should
4442              be  appended.  (This is meant as the primary method for saving a
4443              copy of your messages, but another way to do this is  using  the
4444              “my_hdr”  command  to  create a “Bcc:” field with your email ad‐
4445              dress in it.)
4446
4447              The value of  $record  is  overridden  by  the  $force_name  and
4448              $save_name  variables,  and  the  “fcc-hook”  command.  Also see
4449              $copy and $write_bcc.
4450
4451              Multiple mailboxes may be specified if $fcc_delimiter is set  to
4452              a string delimiter.
4453
4454
4455
4456       reflow_space_quotes
4457              Type: boolean
4458              Default: yes
4459
4460              This  option controls how quotes from format=flowed messages are
4461              displayed in the pager and when replying (with $text_flowed  un‐
4462              set).   When  set,  this  option adds spaces after each level of
4463              quote marks, turning ”>>>foo” into ”> > > foo”.
4464
4465              Note: If $reflow_text is  unset,  this  option  has  no  effect.
4466              Also,  this  option does not affect replies when $text_flowed is
4467              set.
4468
4469
4470
4471       reflow_text
4472              Type: boolean
4473              Default: yes
4474
4475              When set, Mutt will  reformat  paragraphs  in  text/plain  parts
4476              marked  format=flowed.   If  unset, Mutt will display paragraphs
4477              unaltered from how they appear in the message body.  See RFC3676
4478              for details on the format=flowed format.
4479
4480              Also see $reflow_wrap, and $wrap.
4481
4482
4483
4484       reflow_wrap
4485              Type: number
4486              Default: 78
4487
4488              This  variable  controls the maximum paragraph width when refor‐
4489              matting text/plain parts when $reflow_text  is  set.   When  the
4490              value  is  0, paragraphs will be wrapped at the terminal's right
4491              margin.  A positive value sets the paragraph width  relative  to
4492              the left margin.  A negative value set the paragraph width rela‐
4493              tive to the right margin.
4494
4495              Also see $wrap.
4496
4497
4498
4499       reply_regexp
4500              Type: regular expression (localized)
4501              Default: “^(re)(\[[0-9]+\])*:[ \t]*”
4502
4503              A regular expression  used  to  recognize  reply  messages  when
4504              threading  and  replying.  The  default value corresponds to the
4505              standard Latin ”Re:” prefix.
4506
4507              This value may have been localized by the  translator  for  your
4508              locale, adding other prefixes that are common in the locale. You
4509              can add your own prefixes by appending inside ”^(re)”.  For  ex‐
4510              ample: ”^(re|se)” or ”^(re|aw|se)”.
4511
4512              The  second parenthesized expression matches zero or more brack‐
4513              eted numbers following the prefix, such as ”Re[1]: ”.  The  ini‐
4514              tial  ”\\[”  means  a  literal left-bracket character.  Note the
4515              backslash must be doubled  when  used  inside  a  double  quoted
4516              string  in  the  muttrc.   ”[0-9]+”  means  one or more numbers.
4517              ”\\]” means a literal right-bracket.  Finally the  whole  paren‐
4518              thesized  expression has a ”*” suffix, meaning it can occur zero
4519              or more times.
4520
4521              The last part matches a colon followed by an optional  space  or
4522              tab.   Note  ”\t”  is converted to a literal tab inside a double
4523              quoted string.  If you use a single  quoted  string,  you  would
4524              have  to type an actual tab character, and would need to convert
4525              the double-backslashes to single backslashes.
4526
4527              Note: the result of this regexp match  against  the  subject  is
4528              stored  in the header cache.  Mutt isn't smart enough to invali‐
4529              date a header cache entry based on changing $reply_regexp, so if
4530              you  aren't  seeing correct values in the index, try temporarily
4531              turning off the header cache.  If that fixes the  problem,  then
4532              once  the  variable  is  set  to  your liking, remove your stale
4533              header cache files and turn the header cache back on.
4534
4535
4536
4537       reply_self
4538              Type: boolean
4539              Default: no
4540
4541              If unset and you are replying to a message  sent  by  you,  Mutt
4542              will  assume  that  you  want to reply to the recipients of that
4543              message rather than to yourself.
4544
4545              Also see the “alternates” command.
4546
4547
4548
4549       reply_to
4550              Type: quadoption
4551              Default: ask-yes
4552
4553              If set, when replying to a message, Mutt will  use  the  address
4554              listed  in  the  Reply-to: header as the recipient of the reply.
4555              If unset, it will use the address in the From: header field  in‐
4556              stead.   This  option  is useful for reading a mailing list that
4557              sets the Reply-To: header field to the list address and you want
4558              to send a private message to the author of a message.
4559
4560
4561
4562       resolve
4563              Type: boolean
4564              Default: yes
4565
4566              When  set, the cursor will be automatically advanced to the next
4567              (possibly undeleted) message whenever a  command  that  modifies
4568              the current message is executed.
4569
4570
4571
4572       resume_draft_files
4573              Type: boolean
4574              Default: no
4575
4576              If  set,  draft  files (specified by -H on the command line) are
4577              processed similarly to when resuming a postponed  message.   Re‐
4578              cipients  are not prompted for; send-hooks are not evaluated; no
4579              alias expansion takes place; user-defined headers and signatures
4580              are not added to the message.
4581
4582
4583
4584       resume_edited_draft_files
4585              Type: boolean
4586              Default: yes
4587
4588              If  set, draft files previously edited (via -E -H on the command
4589              line) will have $resume_draft_files automatically set when  they
4590              are used as a draft file again.
4591
4592              The  first  time  a draft file is saved, mutt will add a header,
4593              X-Mutt-Resume-Draft to the saved file.  The next time the  draft
4594              file  is  read  in,  if  mutt  sees the header, it will set $re‐
4595              sume_draft_files.
4596
4597              This option is designed to prevent multiple signatures, user-de‐
4598              fined headers, and other processing effects from being made mul‐
4599              tiple times to the draft file.
4600
4601
4602
4603       reverse_alias
4604              Type: boolean
4605              Default: no
4606
4607              This variable controls whether or  not  Mutt  will  display  the
4608              “personal”  name from your aliases in the index menu if it finds
4609              an alias that matches the message's sender.  For example, if you
4610              have the following alias:
4611
4612
4613              alias juser abd30425@somewhere.net (Joe User)
4614
4615
4616              and then you receive mail which contains the following header:
4617
4618
4619              From: abd30425@somewhere.net
4620
4621
4622              It would be displayed in the index menu as “Joe User” instead of
4623              “abd30425@somewhere.net.”  This  is  useful  when  the  person's
4624              e-mail address is not human friendly.
4625
4626
4627
4628       reverse_name
4629              Type: boolean
4630              Default: no
4631
4632              It  may  sometimes arrive that you receive mail to a certain ma‐
4633              chine, move the messages to another machine, and reply  to  some
4634              the  messages  from there.  If this variable is set, the default
4635              From: line of the reply messages  is  built  using  the  address
4636              where  you received the messages you are replying to if that ad‐
4637              dress matches your “alternates”.  If the variable is  unset,  or
4638              the  address that would be used doesn't match your “alternates”,
4639              the From: line will use your address on the current machine.
4640
4641              Also see the “alternates” command and $reverse_realname.
4642
4643
4644
4645       reverse_realname
4646              Type: boolean
4647              Default: yes
4648
4649              This variable fine-tunes the behavior of the $reverse_name  fea‐
4650              ture.
4651
4652              When  it  is  unset,  Mutt  will  remove the real name part of a
4653              matching address.  This allows the  use  of  the  email  address
4654              without  having to also use what the sender put in the real name
4655              field.
4656
4657              When it is set, Mutt will use the matching address as-is.
4658
4659              In either case, a missing real name will be filled in afterwards
4660              using the value of $realname.
4661
4662
4663
4664       rfc2047_parameters
4665              Type: boolean
4666              Default: yes
4667
4668              When this variable is set, Mutt will decode RFC2047-encoded MIME
4669              parameters. You want to set this variable when mutt suggests you
4670              to save attachments to files named like:
4671
4672
4673              =?iso-8859-1?Q?file=5F=E4=5F991116=2Ezip?=
4674
4675
4676              When this variable is set interactively, the change won't be ac‐
4677              tive until you change folders.
4678
4679              Note that this use of RFC2047's encoding is  explicitly  prohib‐
4680              ited by the standard, but nevertheless encountered in the wild.
4681
4682              Also  note  that setting this parameter will not have the effect
4683              that mutt generates this kind of encoding.  Instead,  mutt  will
4684              unconditionally use the encoding specified in RFC2231.
4685
4686
4687
4688       save_address
4689              Type: boolean
4690              Default: no
4691
4692              If set, mutt will take the sender's full address when choosing a
4693              default folder for saving a mail. If $save_name  or  $force_name
4694              is  set  too, the selection of the Fcc folder will be changed as
4695              well.
4696
4697
4698
4699       save_empty
4700              Type: boolean
4701              Default: yes
4702
4703              When unset, mailboxes which contain no saved  messages  will  be
4704              removed  when closed (the exception is $spoolfile which is never
4705              removed).  If set, mailboxes are never removed.
4706
4707              Note: This only applies to mbox and MMDF folders, Mutt does  not
4708              delete MH and Maildir directories.
4709
4710
4711
4712       save_history
4713              Type: number
4714              Default: 0
4715
4716              This  variable  controls  the size of the history (per category)
4717              saved in the $history_file file.
4718
4719
4720
4721       save_name
4722              Type: boolean
4723              Default: no
4724
4725              This variable controls  how  copies  of  outgoing  messages  are
4726              saved.   When set, a check is made to see if a mailbox specified
4727              by the recipient address exists (this is done by searching for a
4728              mailbox  in  the $folder directory with the username part of the
4729              recipient address).  If the mailbox exists, the outgoing message
4730              will be saved to that mailbox, otherwise the message is saved to
4731              the $record mailbox.
4732
4733              Also see the $force_name variable.
4734
4735
4736
4737       score
4738              Type: boolean
4739              Default: yes
4740
4741              When this variable is unset, scoring is turned off.  This can be
4742              useful  to  selectively disable scoring for certain folders when
4743              the $score_threshold_delete variable and related are used.
4744
4745
4746
4747       score_threshold_delete
4748              Type: number
4749              Default: -1
4750
4751              Messages which have been assigned a score equal to or lower than
4752              the value of this variable are automatically marked for deletion
4753              by mutt.  Since mutt scores are always greater than or equal  to
4754              zero,  the  default  setting  of this variable will never mark a
4755              message for deletion.
4756
4757
4758
4759       score_threshold_flag
4760              Type: number
4761              Default: 9999
4762
4763              Messages which have been assigned a score greater than or  equal
4764              to this variable's value are automatically marked ”flagged”.
4765
4766
4767
4768       score_threshold_read
4769              Type: number
4770              Default: -1
4771
4772              Messages which have been assigned a score equal to or lower than
4773              the value of this variable are automatically marked as  read  by
4774              mutt.   Since  mutt  scores  are always greater than or equal to
4775              zero, the default setting of this variable  will  never  mark  a
4776              message read.
4777
4778
4779
4780       search_context
4781              Type: number
4782              Default: 0
4783
4784              For the pager, this variable specifies the number of lines shown
4785              before search  results.  By  default,  search  results  will  be
4786              top-aligned.
4787
4788
4789
4790       send_charset
4791              Type: string
4792              Default: “us-ascii:iso-8859-1:utf-8”
4793
4794              A  colon-delimited list of character sets for outgoing messages.
4795              Mutt will use the first character set into which the text can be
4796              converted exactly.  If your $charset is not “iso-8859-1” and re‐
4797              cipients may not understand “UTF-8”, it is advisable to  include
4798              in  the  list  an appropriate widely used standard character set
4799              (such as “iso-8859-2”, “koi8-r” or “iso-2022-jp”) either instead
4800              of or after “iso-8859-1”.
4801
4802              In  case the text cannot be converted into one of these exactly,
4803              mutt uses $charset as a fallback.
4804
4805
4806
4807       send_multipart_alternative
4808              Type: quadoption
4809              Default: no
4810
4811              If set, Mutt will generate a multipart/alternative container and
4812              an  alternative  part  using  the  filter  script  specified  in
4813              $send_multipart_alternative_filter.  See the section “MIME  Mul‐
4814              tipart/Alternative” (alternative-order).
4815
4816              Note  that enabling multipart/alternative is not compatible with
4817              inline PGP encryption.  Mutt will prompt to use PGP/MIME in that
4818              case.
4819
4820
4821
4822       send_multipart_alternative_filter
4823              Type: path
4824              Default: “”
4825
4826              This  specifies  a  filter  script,  which will convert the main
4827              (composed) message of the email to an alternative  format.   The
4828              message  will be piped to the filter's stdin.  The expected out‐
4829              put of the filter is the generated mime  type,  e.g.  text/html,
4830              followed  by  a blank line, and then the converted content.  See
4831              the section “MIME Multipart/Alternative” (alternative-order).
4832
4833
4834
4835       sendmail
4836              Type: path
4837              Default: “/usr/sbin/sendmail -oem -oi”
4838
4839              Specifies the program and arguments used to deliver mail sent by
4840              Mutt.   Mutt expects that the specified program interprets addi‐
4841              tional arguments as recipient addresses.  Mutt appends  all  re‐
4842              cipients  after  adding a -- delimiter (if not already present).
4843              Additional flags, such as for $use_8bitmime, $use_envelope_from,
4844              $dsn_notify, or $dsn_return will be added before the delimiter.
4845
4846              Note:  This  command is invoked differently from most other com‐
4847              mands in Mutt.  It is tokenized by space, and  invoked  directly
4848              via  execvp(3) with an array of arguments - so commands or argu‐
4849              ments with spaces in them are not supported.  The shell  is  not
4850              used to run the command, so shell quoting is also not supported.
4851
4852              See also: $write_bcc.
4853
4854
4855
4856       sendmail_wait
4857              Type: number
4858              Default: 0
4859
4860              Specifies  the  number  of  seconds  to  wait  for the $sendmail
4861              process to finish before giving up and putting delivery  in  the
4862              background.
4863
4864              Mutt interprets the value of this variable as follows:
4865              >0     number  of  seconds to wait for sendmail to finish before
4866                     continuing
4867              0      wait forever for sendmail to finish
4868              <0     always put sendmail in the background without waiting
4869
4870              Note that if you specify a value other than 0, the output of the
4871              child process will be put in a temporary file.  If there is some
4872              error, you will be informed as to where to find the output.
4873
4874
4875
4876       shell
4877              Type: path
4878              Default: “”
4879
4880              Command to use when spawning a subshell.  By default, the user's
4881              login shell from /etc/passwd is used.
4882
4883
4884
4885       sidebar_delim_chars
4886              Type: string
4887              Default: “/.”
4888
4889              This  contains  the  list  of characters which you would like to
4890              treat as folder separators for displaying paths in the sidebar.
4891
4892              Local mail is often arranged  in  directories:  `dir1/dir2/mail‐
4893              box'.
4894
4895
4896              set sidebar_delim_chars='/'
4897
4898
4899              IMAP mailboxes are often named: `folder1.folder2.mailbox'.
4900
4901
4902              set sidebar_delim_chars='.'
4903
4904
4905              See  also:  $sidebar_short_path,  $sidebar_folder_indent, $side‐
4906              bar_indent_string.
4907
4908
4909
4910       sidebar_divider_char
4911              Type: string
4912              Default: “|”
4913
4914              This specifies the characters to be drawn  between  the  sidebar
4915              (when  visible)  and  the  other  Mutt panels. ASCII and Unicode
4916              line-drawing characters are supported.
4917
4918
4919
4920       sidebar_folder_indent
4921              Type: boolean
4922              Default: no
4923
4924              Set this to indent mailboxes in the sidebar.
4925
4926              See also:  $sidebar_short_path,  $sidebar_indent_string,  $side‐
4927              bar_delim_chars.
4928
4929
4930
4931       sidebar_format
4932              Type: string
4933              Default: “%B%*  %n”
4934
4935              This  variable allows you to customize the sidebar display. This
4936              string is similar to $index_format,  but  has  its  own  set  of
4937              printf(3)-like sequences:
4938              %B     Name of the mailbox
4939              %S     * Size of mailbox (total number of messages)
4940              %N     * Number of unread messages in the mailbox
4941              %n     N if mailbox has new mail, blank otherwise
4942              %F     * Number of Flagged messages in the mailbox
4943              %!     “!”  :  one flagged message; “!!” : two flagged messages;
4944                     “n!” : n flagged messages (for n > 2).  Otherwise  prints
4945                     nothing.
4946              %d     * @ Number of deleted messages
4947              %L     * @ Number of messages after limiting
4948              %t     * @ Number of tagged messages
4949              %>X    right justify the rest of the string and pad with “X”
4950              %|X    pad to the end of the line with “X”
4951              %*X    soft-fill with character “X” as pad
4952
4953              *  = Can be optionally printed if nonzero @ = Only applicable to
4954              the current folder
4955
4956              In order to use %S, %N, %F, and %!,  $mail_check_stats  must  be
4957              set.   When  thus  set,  a  suggested  value  for this option is
4958              ”%B%?F? [%F]?%* %?N?%N/?%S”.
4959
4960
4961
4962       sidebar_indent_string
4963              Type: string
4964              Default: “  ”
4965
4966              This specifies the string that is used to  indent  mailboxes  in
4967              the sidebar.  It defaults to two spaces.
4968
4969              See  also:  $sidebar_short_path,  $sidebar_folder_indent, $side‐
4970              bar_delim_chars.
4971
4972
4973
4974       sidebar_new_mail_only
4975              Type: boolean
4976              Default: no
4977
4978              When set, the sidebar will  only  display  mailboxes  containing
4979              new, or flagged, mail.
4980
4981              See also: sidebar_whitelist.
4982
4983
4984
4985       sidebar_next_new_wrap
4986              Type: boolean
4987              Default: no
4988
4989              When  set,  the <sidebar-next-new> command will not stop and the
4990              end of the list of mailboxes, but wrap around to the  beginning.
4991              The  <sidebar-prev-new>  command is similarly affected, wrapping
4992              around to the end of the list.
4993
4994
4995
4996       sidebar_relative_shortpath_indent
4997              Type: boolean
4998              Default: no
4999
5000              When set, this option changes how $sidebar_short_path and $side‐
5001              bar_folder_indent  perform shortening and indentation: both will
5002              look at the previous sidebar entries and shorten/indent relative
5003              to the most recent parent.
5004
5005              An example of this option set/unset for mailboxes listed in this
5006              order, with $sidebar_short_path=yes, $sidebar_folder_indent=yes,
5007              and $sidebar_indent_string=”→”:
5008              mailbox
5009                     set unset
5010              =a.b   =a.b →b
5011              =a.b.c.d
5012                     →c.d →→→d
5013              =a.b.e →e →→e
5014
5015              The second line illustrates most clearly.  With this option set,
5016              =a.b.c.d is shortened relative to =a.b, becoming c.d; it is also
5017              indented  one  place  relative  to =a.b.  With this option unset
5018              =a.b.c.d is always shortened to the last part of the mailbox,  d
5019              and  is  indented  three places, with respect to $folder (repre‐
5020              sented by '=').
5021
5022              When set, the third line will also  be  indented  and  shortened
5023              relative to the first line.
5024
5025
5026
5027       sidebar_short_path
5028              Type: boolean
5029              Default: no
5030
5031              By default the sidebar will show the mailbox's path, relative to
5032              the $folder variable. Setting sidebar_shortpath=yes will shorten
5033              the names relative to the previous name. Here's an example:
5034              shortpath=no
5035                     shortpath=yes    shortpath=yes,   folderindent=yes,   in‐
5036                     dentstr=”..”
5037              fruit  fruit fruit
5038              fruit.apple
5039                     apple ..apple
5040              fruit.banana
5041                     banana ..banana
5042              fruit.cherry
5043                     cherry ..cherry
5044
5045              See also: $sidebar_delim_chars,  $sidebar_folder_indent,  $side‐
5046              bar_indent_string.
5047
5048
5049
5050       sidebar_sort_method
5051              Type: sort order
5052              Default: unsorted
5053
5054              Specifies  how  to  sort mailbox entries in the sidebar.  By de‐
5055              fault, the entries are sorted alphabetically.  Valid values:
5056              ‐ alpha (alphabetically)
5057              ‐ count (all message count)
5058              ‐ flagged (flagged message count)
5059              ‐ name (alphabetically)
5060              ‐ new (unread message count)
5061              ‐ path (alphabetically)
5062              ‐ unread (unread message count)
5063              ‐ unsorted
5064
5065              You may optionally use the “reverse-” prefix to specify  reverse
5066              sorting  order  (example:  “set  sidebar_sort_method=reverse-al‐
5067              pha”).
5068
5069
5070
5071       sidebar_use_mailbox_shortcuts
5072              Type: boolean
5073              Default: no
5074
5075              When set, sidebar  mailboxes  will  be  displayed  with  mailbox
5076              shortcut prefixes ”=” or ”~”.
5077
5078              When  unset, the sidebar will trim off a matching $folder prefix
5079              but otherwise not use mailbox shortcuts.
5080
5081
5082
5083       sidebar_visible
5084              Type: boolean
5085              Default: no
5086
5087              This specifies whether or not to show sidebar. The sidebar shows
5088              a list of all your mailboxes.
5089
5090              See also: $sidebar_format, $sidebar_width
5091
5092
5093
5094       sidebar_width
5095              Type: number
5096              Default: 30
5097
5098              This  controls  the  width  of  the  sidebar.  It is measured in
5099              screen columns.  For example: sidebar_width=20 could display  20
5100              ASCII characters, or 10 Chinese characters.
5101
5102
5103
5104       sig_dashes
5105              Type: boolean
5106              Default: yes
5107
5108              If  set,  a line containing “-- ” (note the trailing space) will
5109              be inserted before your $signature.  It is strongly  recommended
5110              that  you not unset this variable unless your signature contains
5111              just your name.  The reason for this is  because  many  software
5112              packages  use  “--  \n”  to detect your signature.  For example,
5113              Mutt has the ability to highlight the signature in  a  different
5114              color in the built-in pager.
5115
5116
5117
5118       sig_on_top
5119              Type: boolean
5120              Default: no
5121
5122              If set, the signature will be included before any quoted or for‐
5123              warded text.  It is strongly recommended that  you  do  not  set
5124              this variable unless you really know what you are doing, and are
5125              prepared to take some heat from netiquette guardians.
5126
5127
5128
5129       signature
5130              Type: path
5131              Default: “~/.signature”
5132
5133              Specifies the filename of your signature, which is  appended  to
5134              all outgoing messages.   If the filename ends with a pipe (“|”),
5135              it is assumed that filename is a shell command and input  should
5136              be read from its standard output.
5137
5138
5139
5140       simple_search
5141              Type: string
5142              Default: “~f %s | ~s %s”
5143
5144              Specifies  how  Mutt  should  expand a simple search into a real
5145              search pattern.  A simple search is one that  does  not  contain
5146              any  of  the “~” pattern modifiers.  See “patterns” for more in‐
5147              formation on search patterns.
5148
5149              For example, if you simply type  “joe”  at  a  search  or  limit
5150              prompt, Mutt will automatically expand it to the value specified
5151              by this variable by replacing “%s”  with  the  supplied  string.
5152              For  the default value, “joe” would be expanded to: “~f joe | ~s
5153              joe”.
5154
5155
5156
5157       size_show_bytes
5158              Type: boolean
5159              Default: no
5160
5161              If set, message sizes will display bytes for values less than  1
5162              kilobyte.  See formatstrings-size.
5163
5164
5165
5166       size_show_fractions
5167              Type: boolean
5168              Default: yes
5169
5170              If  set,  message  sizes will be displayed with a single decimal
5171              value for sizes from 0 to 10 kilobytes and 1  to  10  megabytes.
5172              See formatstrings-size.
5173
5174
5175
5176       size_show_mb
5177              Type: boolean
5178              Default: yes
5179
5180              If  set, message sizes will display megabytes for values greater
5181              than or equal to 1 megabyte.  See formatstrings-size.
5182
5183
5184
5185       size_units_on_left
5186              Type: boolean
5187              Default: no
5188
5189              If set, message sizes units will be displayed to the left of the
5190              number.  See formatstrings-size.
5191
5192
5193
5194       sleep_time
5195              Type: number
5196              Default: 1
5197
5198              Specifies  time,  in  seconds, to pause while displaying certain
5199              informational messages, while moving from folder to  folder  and
5200              after  expunging  messages from the current folder.  The default
5201              is to pause one second, so a value of zero for this option  sup‐
5202              presses the pause.
5203
5204
5205
5206       smart_wrap
5207              Type: boolean
5208              Default: yes
5209
5210              Controls  the  display  of lines longer than the screen width in
5211              the internal pager. If set, long lines are  wrapped  at  a  word
5212              boundary.   If  unset,  lines  are  simply wrapped at the screen
5213              edge. Also see the $markers variable.
5214
5215
5216
5217       smileys
5218              Type: regular expression
5219              Default: “(>From )|(:[-^]?[][)(><}{|/DP])”
5220
5221              The pager uses this variable to catch some  common  false  posi‐
5222              tives  of $quote_regexp, most notably smileys and not consider a
5223              line quoted text if it also matches $smileys. This  mostly  hap‐
5224              pens at the beginning of a line.
5225
5226
5227
5228       smime_ask_cert_label
5229              Type: boolean
5230              Default: yes
5231
5232              This flag controls whether you want to be asked to enter a label
5233              for a certificate about to be added to the database or  not.  It
5234              is set by default.  (S/MIME only)
5235
5236
5237
5238       smime_ca_location
5239              Type: path
5240              Default: “”
5241
5242              This variable contains the name of either a directory, or a file
5243              which  contains  trusted  certificates  for  use  with  OpenSSL.
5244              (S/MIME only)
5245
5246
5247
5248       smime_certificates
5249              Type: path
5250              Default: “”
5251
5252              Since  for  S/MIME there is no pubring/secring as with PGP, mutt
5253              has to handle storage and retrieval of keys by itself.  This  is
5254              very  basic  right  now, and keys and certificates are stored in
5255              two different directories, both  named  as  the  hash-value  re‐
5256              trieved  from  OpenSSL.  There  is  an index file which contains
5257              mailbox-address keyid pairs, and which can be  manually  edited.
5258              This option points to the location of the certificates.  (S/MIME
5259              only)
5260
5261
5262
5263       smime_decrypt_command
5264              Type: string
5265              Default: “”
5266
5267              This format string specifies a command which is used to  decrypt
5268              application/x-pkcs7-mime attachments.
5269
5270              The OpenSSL command formats have their own set of printf(3)-like
5271              sequences similar to PGP's:
5272              %f     Expands to the name of a file containing a message.
5273              %s     Expands to the name of a file  containing  the  signature
5274                     part
5275                                of  a multipart/signed attachment when verify‐
5276                     ing it.
5277              %k     The key-pair specified with $smime_default_key
5278              %c     One or more certificate IDs.
5279              %a     The algorithm used for encryption.
5280              %d     The   message    digest    algorithm    specified    with
5281                     $smime_sign_digest_alg.
5282              %C     CA location:  Depending on whether $smime_ca_location
5283                                points to a directory or file, this expands to
5284                                “-CApath   $smime_ca_location”   or   “-CAfile
5285                     $smime_ca_location”.
5286
5287              For examples on how to configure these formats, see the smime.rc
5288              in  the  samples/  subdirectory which has been installed on your
5289              system alongside the documentation.  (S/MIME only)
5290
5291
5292
5293       smime_decrypt_use_default_key
5294              Type: boolean
5295              Default: yes
5296
5297              If set (default) this tells mutt to use the default key for  de‐
5298              cryption. Otherwise, if managing multiple certificate-key-pairs,
5299              mutt will try to use the mailbox-address to determine the key to
5300              use.  It  will  ask  you  to supply a key, if it can't find one.
5301              (S/MIME only)
5302
5303
5304
5305       smime_default_key
5306              Type: string
5307              Default: “”
5308
5309              This is the default key-pair to use for S/MIME  operations,  and
5310              must be set to the keyid (the hash-value that OpenSSL generates)
5311              to work properly.
5312
5313              It will  be  used  for  encryption  (see  $postpone_encrypt  and
5314              $smime_self_encrypt).  If  GPGME  is enabled, this is the key id
5315              displayed by gpgsm.
5316
5317              It will be used  for  decryption  unless  $smime_decrypt_use_de‐
5318              fault_key is unset.
5319
5320              It will also be used for signing unless $smime_sign_as is set.
5321
5322              The  (now deprecated) smime_self_encrypt_as is an alias for this
5323              variable, and should no longer be used.  (S/MIME only)
5324
5325
5326
5327       smime_encrypt_command
5328              Type: string
5329              Default: “”
5330
5331              This command is used to create encrypted S/MIME messages.
5332
5333              This is a format string, see the $smime_decrypt_command  command
5334              for possible printf(3)-like sequences.  (S/MIME only)
5335
5336
5337
5338       smime_encrypt_with
5339              Type: string
5340              Default: “aes256”
5341
5342              This  sets  the  algorithm  that  should be used for encryption.
5343              Valid choices are “aes128”, “aes192”, “aes256”,  “des”,  “des3”,
5344              “rc2-40”, “rc2-64”, “rc2-128”.  (S/MIME only)
5345
5346
5347
5348       smime_get_cert_command
5349              Type: string
5350              Default: “”
5351
5352              This  command  is used to extract X509 certificates from a PKCS7
5353              structure.
5354
5355              This is a format string, see the $smime_decrypt_command  command
5356              for possible printf(3)-like sequences.  (S/MIME only)
5357
5358
5359
5360       smime_get_cert_email_command
5361              Type: string
5362              Default: “”
5363
5364              This  command  is  used to extract the mail address(es) used for
5365              storing X509 certificates, and  for  verification  purposes  (to
5366              check  whether the certificate was issued for the sender's mail‐
5367              box).
5368
5369              This is a format string, see the $smime_decrypt_command  command
5370              for possible printf(3)-like sequences.  (S/MIME only)
5371
5372
5373
5374       smime_get_signer_cert_command
5375              Type: string
5376              Default: “”
5377
5378              This  command  is used to extract only the signers X509 certifi‐
5379              cate from a S/MIME signature, so that  the  certificate's  owner
5380              may get compared to the email's “From:” field.
5381
5382              This  is a format string, see the $smime_decrypt_command command
5383              for possible printf(3)-like sequences.  (S/MIME only)
5384
5385
5386
5387       smime_import_cert_command
5388              Type: string
5389              Default: “”
5390
5391              This command is used to import a certificate via smime_keys.
5392
5393              This is a format string, see the $smime_decrypt_command  command
5394              for possible printf(3)-like sequences.  (S/MIME only)
5395
5396
5397
5398       smime_is_default
5399              Type: boolean
5400              Default: no
5401
5402              The  default behavior of mutt is to use PGP on all auto-sign/en‐
5403              cryption operations. To override and to use OpenSSL instead this
5404              must  be set.  However, this has no effect while replying, since
5405              mutt will automatically select the  same  application  that  was
5406              used  to  sign/encrypt  the  original  message.  (Note that this
5407              variable  can  be  overridden  by  unsetting  $crypt_autosmime.)
5408              (S/MIME only)
5409
5410
5411
5412       smime_keys
5413              Type: path
5414              Default: “”
5415
5416              Since  for  S/MIME there is no pubring/secring as with PGP, mutt
5417              has to handle storage and retrieval  of  keys/certs  by  itself.
5418              This  is  very basic right now, and stores keys and certificates
5419              in two different directories, both named as the  hash-value  re‐
5420              trieved  from  OpenSSL.  There  is  an index file which contains
5421              mailbox-address keyid pair, and which can  be  manually  edited.
5422              This option points to the location of the private keys.  (S/MIME
5423              only)
5424
5425
5426
5427       smime_pk7out_command
5428              Type: string
5429              Default: “”
5430
5431              This command is used to extract PKCS7 structures of S/MIME  sig‐
5432              natures, in order to extract the public X509 certificate(s).
5433
5434              This  is a format string, see the $smime_decrypt_command command
5435              for possible printf(3)-like sequences.  (S/MIME only)
5436
5437
5438
5439       smime_self_encrypt
5440              Type: boolean
5441              Default: yes
5442
5443              When set, S/MIME encrypted messages will also be encrypted using
5444              the certificate in $smime_default_key.  (S/MIME only)
5445
5446
5447
5448       smime_sign_as
5449              Type: string
5450              Default: “”
5451
5452              If  you  have  a separate key to use for signing, you should set
5453              this to the signing key. Most  people  will  only  need  to  set
5454              $smime_default_key.  (S/MIME only)
5455
5456
5457
5458       smime_sign_command
5459              Type: string
5460              Default: “”
5461
5462              This command is used to created S/MIME signatures of type multi‐
5463              part/signed, which can be read by all mail clients.
5464
5465              This is a format string, see the $smime_decrypt_command  command
5466              for possible printf(3)-like sequences.  NOTE: %c and %k will de‐
5467              fault to $smime_sign_as if  set,  otherwise  $smime_default_key.
5468              (S/MIME only)
5469
5470
5471
5472       smime_sign_digest_alg
5473              Type: string
5474              Default: “sha256”
5475
5476              This  sets  the  algorithm that should be used for the signature
5477              message digest.  Valid  choices  are  “md5”,  “sha1”,  “sha224”,
5478              “sha256”, “sha384”, “sha512”.  (S/MIME only)
5479
5480
5481
5482       smime_sign_opaque_command
5483              Type: string
5484              Default: “”
5485
5486              This command is used to created S/MIME signatures of type appli‐
5487              cation/x-pkcs7-signature, which can  only  be  handled  by  mail
5488              clients supporting the S/MIME extension.
5489
5490              This  is a format string, see the $smime_decrypt_command command
5491              for possible printf(3)-like sequences.  (S/MIME only)
5492
5493
5494
5495       smime_timeout
5496              Type: number (long)
5497              Default: 300
5498
5499              The number of seconds after which a cached passphrase  will  ex‐
5500              pire if not used.  (S/MIME only)
5501
5502
5503
5504       smime_verify_command
5505              Type: string
5506              Default: “”
5507
5508              This  command is used to verify S/MIME signatures of type multi‐
5509              part/signed.
5510
5511              This is a format string, see the $smime_decrypt_command  command
5512              for possible printf(3)-like sequences.  (S/MIME only)
5513
5514
5515
5516       smime_verify_opaque_command
5517              Type: string
5518              Default: “”
5519
5520              This  command is used to verify S/MIME signatures of type appli‐
5521              cation/x-pkcs7-mime.
5522
5523              This is a format string, see the $smime_decrypt_command  command
5524              for possible printf(3)-like sequences.  (S/MIME only)
5525
5526
5527
5528       smtp_authenticators
5529              Type: string
5530              Default: “”
5531
5532              This  is  a  colon-delimited list of authentication methods mutt
5533              may attempt to use to log in to an SMTP  server,  in  the  order
5534              mutt should try them.  Authentication methods are any SASL mech‐
5535              anism, e.g.  “digest-md5”, “gssapi” or “cram-md5”.  This  option
5536              is  case-insensitive.  If  it is “unset” (the default) mutt will
5537              try  all  available  methods,  in  order  from  most-secure   to
5538              least-secure.
5539
5540              Example:
5541
5542
5543              set smtp_authenticators=”digest-md5:cram-md5”
5544
5545
5546
5547
5548       smtp_oauth_refresh_command
5549              Type: string
5550              Default: “”
5551
5552              The command to run to generate an OAUTH refresh token for autho‐
5553              rizing your connection to your SMTP server.  This  command  will
5554              be run on every connection attempt that uses the OAUTHBEARER au‐
5555              thentication mechanism.  See “oauth” for details.
5556
5557
5558
5559       smtp_pass
5560              Type: string
5561              Default: “”
5562
5563              Specifies the password for your SMTP account.   If  unset,  Mutt
5564              will  prompt  you for your password when you first send mail via
5565              SMTP.  See $smtp_url to configure mutt to send mail via SMTP.
5566
5567              Warning: you should only use this  option  when  you  are  on  a
5568              fairly  secure machine, because the superuser can read your mut‐
5569              trc even if you are the only one who can read the file.
5570
5571
5572
5573       smtp_url
5574              Type: string
5575              Default: “”
5576
5577              Defines the SMTP smarthost where sent  messages  should  relayed
5578              for delivery. This should take the form of an SMTP URL, e.g.:
5579
5580
5581              smtp[s]://[user[:pass]@]host[:port]
5582
5583
5584              where  “[...]”  denotes an optional part.  Setting this variable
5585              overrides the value of the $sendmail variable.
5586
5587              Also see $write_bcc.
5588
5589
5590
5591       sort
5592              Type: sort order
5593              Default: date
5594
5595              Specifies how to sort messages in the “index” menu.  Valid  val‐
5596              ues are:
5597              ‐ date or date-sent
5598              ‐ date-received
5599              ‐ from
5600              ‐ mailbox-order (unsorted)
5601              ‐ score
5602              ‐ size
5603              ‐ spam
5604              ‐ subject
5605              ‐ threads
5606              ‐ to
5607
5608              You  may optionally use the “reverse-” prefix to specify reverse
5609              sorting order (example: “set sort=reverse-date-sent”).
5610
5611              For values except “threads”,  this  provides  the  primary  sort
5612              method.   When two message sort values are equal, $sort_aux will
5613              be used for a secondary sort.
5614
5615              When set to “threads”, Mutt threads messages in  the  index.  It
5616              uses  the  variable  $sort_thread_groups to sort between threads
5617              (at the top/root level), and $sort_aux to sort  sub-threads  and
5618              children.
5619
5620
5621
5622       sort_alias
5623              Type: sort order
5624              Default: alias
5625
5626              Specifies  how  the entries in the “alias” menu are sorted.  The
5627              following are legal values:
5628              ‐ address (sort alphabetically by email address)
5629              ‐ alias (sort alphabetically by alias name)
5630              ‐ unsorted (leave in order specified in .muttrc)
5631
5632
5633       sort_aux
5634              Type: sort order
5635              Default: date
5636
5637              For non-threaded mode, this provides a secondary sort  for  mes‐
5638              sages  in  the  “index” menu, used when the $sort value is equal
5639              for two messages.
5640
5641              When sorting by threads, this variable controls how the branches
5642              of  the  thread  trees are sorted.  This can be set to any value
5643              that $sort can, except “threads” (in that case, mutt  will  just
5644              use  “date-sent”).   You  can also specify the “last-” prefix in
5645              addition to the “reverse-” prefix, but “last-” must  come  after
5646              “reverse-”.   The  “last-”  prefix  causes messages to be sorted
5647              against its siblings by which has the last descendant, using the
5648              rest of $sort_aux as an ordering.  For instance,
5649
5650
5651              set sort_aux=last-date-received
5652
5653
5654              would  mean  that  if a new message is received in a sub-thread,
5655              that sub-thread becomes the last one displayed.
5656
5657              Note: For reversed-threads $sort order,  $sort_aux  is  reversed
5658              again (which is not the right thing to do, but kept to not break
5659              any existing configuration setting).
5660
5661
5662
5663       sort_browser
5664              Type: sort order
5665              Default: alpha
5666
5667              Specifies how to sort entries in the file browser.  By  default,
5668              the entries are sorted alphabetically.  Valid values:
5669              ‐ alpha (alphabetically)
5670              ‐ count
5671              ‐ date
5672              ‐ size
5673              ‐ unread
5674              ‐ unsorted
5675
5676              You  may optionally use the “reverse-” prefix to specify reverse
5677              sorting order (example: “set sort_browser=reverse-date”).
5678
5679
5680
5681       sort_browser_mailboxes
5682              Type: sort order
5683              Default: unsorted
5684
5685              Specifies how to sort entries in the mailbox  browser.   By  de‐
5686              fault,  the entries are unsorted, displayed in the same order as
5687              listed in the “mailboxes” command.  Valid values:
5688              ‐ alpha (alphabetically)
5689              ‐ count
5690              ‐ date
5691              ‐ size
5692              ‐ unread
5693              ‐ unsorted
5694
5695              You may optionally use the “reverse-” prefix to specify  reverse
5696              sorting  order (example: “set sort_browser_mailboxes=reverse-al‐
5697              pha”).
5698
5699
5700
5701       sort_re
5702              Type: boolean
5703              Default: yes
5704
5705              This variable is  only  useful  when  sorting  by  threads  with
5706              $strict_threads  unset.   In that case, it changes the heuristic
5707              mutt uses to thread messages by  subject.   With  $sort_re  set,
5708              mutt  will only attach a message as the child of another message
5709              by subject if the subject of the child  message  starts  with  a
5710              substring  matching the setting of $reply_regexp.  With $sort_re
5711              unset, mutt will attach the message whether or not this  is  the
5712              case,  as  long  as the non-$reply_regexp parts of both messages
5713              are identical.
5714
5715
5716
5717       sort_thread_groups
5718              Type: sort order
5719              Default: aux
5720
5721              When sorting by threads, this variable controls how threads  are
5722              sorted  in  relation  to  other threads (at the top/root level).
5723              This can be set to any value that $sort can,  except  “threads”.
5724              You  can also specify the “last-” prefix in addition to the “re‐
5725              verse-” prefix, but “last-” must  come  after  “reverse-”.   The
5726              “last-” prefix causes messages to be sorted against its siblings
5727              by  which  has  the  last  descendant,   using   the   rest   of
5728              $sort_thread_groups as an ordering.
5729
5730              For  backward  compatibility,  the default value is “aux”, which
5731              means to use $sort_aux for top-level thread  sorting  too.   The
5732              value  “aux” does not respect “last-” or “reverse-” prefixes, it
5733              simply delegates sorting directly to $sort_aux.
5734
5735              Note: For reversed-threads $sort order,  $sort_thread_groups  is
5736              reversed  again (which is not the right thing to do, but kept to
5737              not break any existing configuration setting).
5738
5739
5740
5741       spam_separator
5742              Type: string
5743              Default: “,”
5744
5745              This variable controls what happens when multiple  spam  headers
5746              are matched: if unset, each successive header will overwrite any
5747              previous matches value for the spam label. If set, each  succes‐
5748              sive  match  will  append to the previous, using this variable's
5749              value as a separator.
5750
5751
5752
5753       spoolfile
5754              Type: path
5755              Default: “”
5756
5757              If your spool mailbox is in a non-default place where Mutt  can‐
5758              not  find  it,  you can specify its location with this variable.
5759              Mutt will initially set this variable to the value of the  envi‐
5760              ronment variable $MAIL or $MAILDIR if either is defined.
5761
5762
5763
5764       ssl_ca_certificates_file
5765              Type: path
5766              Default: “/etc/ssl/certs/ca-bundle.crt”
5767
5768              This  variable  specifies  a file containing trusted CA certifi‐
5769              cates.  Any server certificate that is signed with one of  these
5770              CA certificates is also automatically accepted. (GnuTLS only)
5771
5772              Example:
5773
5774
5775              set ssl_ca_certificates_file=/etc/ssl/certs/ca-certificates.crt
5776
5777
5778
5779
5780       ssl_client_cert
5781              Type: path
5782              Default: “”
5783
5784              The file containing a client certificate and its associated pri‐
5785              vate key.
5786
5787
5788
5789       ssl_force_tls
5790              Type: boolean
5791              Default: yes
5792
5793              If this variable is set, Mutt will require that all  connections
5794              to  remote  servers be encrypted. Furthermore it will attempt to
5795              negotiate TLS even if the server does not advertise the capabil‐
5796              ity,  since it would otherwise have to abort the connection any‐
5797              way. This option supersedes $ssl_starttls.
5798
5799
5800
5801       ssl_min_dh_prime_bits
5802              Type: number
5803              Default: 0
5804
5805              This variable specifies the minimum acceptable  prime  size  (in
5806              bits)  for  use in any Diffie-Hellman key exchange. A value of 0
5807              will use the default from the GNUTLS library. (GnuTLS only)
5808
5809
5810
5811       ssl_starttls
5812              Type: quadoption
5813              Default: yes
5814
5815              If set (the default), mutt  will  attempt  to  use  STARTTLS  on
5816              servers  advertising  the  capability. When unset, mutt will not
5817              attempt to use STARTTLS regardless of the server's capabilities.
5818
5819              Note that STARTTLS is subject to many kinds of attacks,  includ‐
5820              ing  the  ability of a machine-in-the-middle to suppress the ad‐
5821              vertising of support.  Setting $ssl_force_tls is recommended  if
5822              you rely on STARTTLS.
5823
5824
5825
5826       ssl_use_sslv2
5827              Type: boolean
5828              Default: no
5829
5830              If  set  ,  Mutt  will use SSLv2 when communicating with servers
5831              that request it. N.B. As of 2011, SSLv2 is considered  insecure,
5832              and          using          is          inadvisable.         See
5833              https://tools.ietf.org/html/rfc6176 .  (OpenSSL only)
5834
5835
5836
5837       ssl_use_sslv3
5838              Type: boolean
5839              Default: no
5840
5841              If set , Mutt will use SSLv3  when  communicating  with  servers
5842              that  request it. N.B. As of 2015, SSLv3 is considered insecure,
5843              and       using       it       is        inadvisable.        See
5844              https://tools.ietf.org/html/rfc7525 .
5845
5846
5847
5848       ssl_use_tlsv1
5849              Type: boolean
5850              Default: no
5851
5852              If  set  , Mutt will use TLSv1.0 when communicating with servers
5853              that request it. N.B. As of 2015, TLSv1.0  is  considered  inse‐
5854              cure,      and      using     it     is     inadvisable.     See
5855              https://tools.ietf.org/html/rfc7525 .
5856
5857
5858
5859       ssl_use_tlsv1_1
5860              Type: boolean
5861              Default: no
5862
5863              If set , Mutt will use TLSv1.1 when communicating  with  servers
5864              that  request  it.  N.B. As of 2015, TLSv1.1 is considered inse‐
5865              cure,     and     using     it     is      inadvisable.      See
5866              https://tools.ietf.org/html/rfc7525 .
5867
5868
5869
5870       ssl_use_tlsv1_2
5871              Type: boolean
5872              Default: yes
5873
5874              If  set  , Mutt will use TLSv1.2 when communicating with servers
5875              that request it.
5876
5877
5878
5879       ssl_use_tlsv1_3
5880              Type: boolean
5881              Default: yes
5882
5883              If set , Mutt will use TLSv1.3 when communicating  with  servers
5884              that request it.
5885
5886
5887
5888       ssl_usesystemcerts
5889              Type: boolean
5890              Default: yes
5891
5892              If  set to yes, mutt will use CA certificates in the system-wide
5893              certificate store when  checking  if  a  server  certificate  is
5894              signed by a trusted CA. (OpenSSL only)
5895
5896
5897
5898       ssl_verify_dates
5899              Type: boolean
5900              Default: yes
5901
5902              If  set  (the  default),  mutt  will  not automatically accept a
5903              server certificate that is either not yet valid or  already  ex‐
5904              pired.  You  should  only unset this for particular known hosts,
5905              using the <account-hook> function.
5906
5907
5908
5909       ssl_verify_host
5910              Type: boolean
5911              Default: yes
5912
5913              If set (the default),  mutt  will  not  automatically  accept  a
5914              server  certificate whose host name does not match the host used
5915              in your folder URL. You should only unset  this  for  particular
5916              known hosts, using the <account-hook> function.
5917
5918
5919
5920       ssl_verify_host_override
5921              Type: string
5922              Default: “”
5923
5924              Defines  an alternate host name to verify the server certificate
5925              against.  This should not be set unless you are  sure  what  you
5926              are  doing,  but  it  might be useful for connection to a .onion
5927              host without a properly configured host name in the certificate.
5928              See $ssl_verify_host.
5929
5930
5931
5932       ssl_verify_partial_chains
5933              Type: boolean
5934              Default: no
5935
5936              This  option  should  not be changed from the default unless you
5937              understand what you are doing.
5938
5939              Setting this variable to yes will permit verifying partial  cer‐
5940              tification chains, i. e. a certificate chain where not the root,
5941              but an intermediate certificate CA, or the host certificate, are
5942              marked  trusted (in $certificate_file), without marking the root
5943              signing CA as trusted.
5944
5945              (OpenSSL 1.0.2b and newer only).
5946
5947
5948
5949       ssl_ciphers
5950              Type: string
5951              Default: “@SYSTEM”
5952
5953              Contains a colon-separated list of ciphers  to  use  when  using
5954              SSL.  For OpenSSL, see ciphers(1) for the syntax of the string.
5955
5956              For GnuTLS, this option will be used in place of ”NORMAL” at the
5957              start of the priority string.  See  gnutls_priority_init(3)  for
5958              the  syntax  and  more  details.  (Note: GnuTLS version 2.1.7 or
5959              higher is required.)
5960
5961
5962
5963       status_chars
5964              Type: string
5965              Default: “-*%A”
5966
5967              Controls the characters used by  the  “%r”  indicator  in  $sta‐
5968              tus_format.  The first character is used when the mailbox is un‐
5969              changed. The second is used when the mailbox has  been  changed,
5970              and  it  needs  to  be  resynchronized. The third is used if the
5971              mailbox is in read-only mode, or if  the  mailbox  will  not  be
5972              written  when  exiting  that  mailbox (You can toggle whether to
5973              write changes to a mailbox with  the  <toggle-write>  operation,
5974              bound  by  default  to “%”). The fourth is used to indicate that
5975              the current folder has been opened in attach- message mode (Cer‐
5976              tain operations like composing a new mail, replying, forwarding,
5977              etc. are not permitted in this mode).
5978
5979
5980
5981       status_format
5982              Type: string (localized)
5983              Default: “-%r-Mutt: %f [Msgs:%?M?%M/?%m%?n? New:%n?%?o? Old:%o?%?d? Del:%d?%?F? Flag:%F?%?t? Tag:%t?%?p? Post:%p?%?b? Inc:%b?%?B? Back:%B?%?l? %l?]---(%s/%?T?%T/?%S)-%>-(%P)---”
5984
5985              Controls the format of the status line displayed in the  “index”
5986              menu.   This string is similar to $index_format, but has its own
5987              set of printf(3)-like sequences:
5988              %b     number of mailboxes with new mail *
5989              %B     number of backgrounded editing sessions *
5990              %d     number of deleted messages *
5991              %f     the full pathname of the current mailbox
5992              %F     number of flagged messages *
5993              %h     local hostname
5994              %l     size (in bytes)  of  the  current  mailbox  (see  format‐
5995                     strings-size) *
5996              %L     size  (in bytes) of the messages shown (i.e., which match
5997                     the current limit) (see formatstrings-size) *
5998              %m     the number of messages in the mailbox *
5999              %M     the number of messages shown (i.e., which match the  cur‐
6000                     rent limit) *
6001              %n     number of new messages in the mailbox *
6002              %o     number of old unread messages *
6003              %p     number of postponed messages *
6004              %P     percentage of the way through the index
6005              %r     modified/read-only/won't-write/attach-message  indicator,
6006                     according to $status_chars
6007              %R     number of read messages *
6008              %s     current sorting mode ($sort)
6009              %S     current aux sorting method ($sort_aux)
6010              %t     number of tagged messages *
6011              %T     current thread group sorting method ($sort_thread_groups)
6012                     *
6013              %u     number of unread messages *
6014              %v     Mutt version string
6015              %V     currently active limit pattern, if any *
6016              %>X    right justify the rest of the string and pad with “X”
6017              %|X    pad to the end of the line with “X”
6018              %*X    soft-fill with character “X” as pad
6019
6020              For  an  explanation of “soft-fill”, see the $index_format docu‐
6021              mentation.
6022
6023              * = can be optionally printed if nonzero
6024
6025              Some of the above sequences can be used to  optionally  print  a
6026              string  if  their  value  is nonzero.  For example, you may only
6027              want to see the number of flagged messages if such messages  ex‐
6028              ist,  since  zero is not particularly meaningful.  To optionally
6029              print a string based upon one of the above sequences,  the  fol‐
6030              lowing construct is used:
6031
6032              %?<sequence_char>?<optional_string>?
6033
6034              where sequence_char is a character from the table above, and op‐
6035              tional_string is the  string  you  would  like  printed  if  se‐
6036              quence_char  is  nonzero.  optional_string may contain other se‐
6037              quences as well as normal text, but you may  not  nest  optional
6038              strings.
6039
6040              Here is an example illustrating how to optionally print the num‐
6041              ber of new messages in a mailbox:
6042
6043              %?n?%n new messages.?
6044
6045              You can also switch between two strings using the following con‐
6046              struct:
6047
6048              %?<sequence_char>?<if_string>&<else_string>?
6049
6050              If the value of sequence_char is non-zero, if_string will be ex‐
6051              panded, otherwise else_string will be expanded.
6052
6053              You can force the result of any printf(3)-like  sequence  to  be
6054              lowercase by prefixing the sequence character with an underscore
6055              (“_”) sign.  For example, if you want to display the local host‐
6056              name in lowercase, you would use: “%_h”.
6057
6058              If  you prefix the sequence character with a colon (“:”) charac‐
6059              ter, mutt will replace any dots in the expansion by underscores.
6060              This  might be helpful with IMAP folders that don't like dots in
6061              folder names.
6062
6063
6064
6065       status_on_top
6066              Type: boolean
6067              Default: no
6068
6069              Setting this variable causes the “status bar” to be displayed on
6070              the  first  line  of  the screen rather than near the bottom. If
6071              $help is set, too it'll be placed at the bottom.
6072
6073
6074
6075       strict_threads
6076              Type: boolean
6077              Default: no
6078
6079              If set, threading will only make use of  the  “In-Reply-To”  and
6080              “References:”  fields when you $sort by message threads.  By de‐
6081              fault, messages with the same subject are  grouped  together  in
6082              “pseudo  threads.”. This may not always be desirable, such as in
6083              a personal mailbox where you might have several  unrelated  mes‐
6084              sages  with  the  subjects  like “hi” which will get grouped to‐
6085              gether. See also $sort_re for a less drastic way of  controlling
6086              this behavior.
6087
6088
6089
6090       suspend
6091              Type: boolean
6092              Default: yes
6093
6094              When unset, mutt won't stop when the user presses the terminal's
6095              susp key, usually “^Z”. This is useful if you run mutt inside an
6096              xterm using a command like “xterm -e mutt”.
6097
6098
6099
6100       text_flowed
6101              Type: boolean
6102              Default: no
6103
6104              When  set, mutt will generate “format=flowed” bodies with a con‐
6105              tent type of “text/plain; format=flowed”.  This format is easier
6106              to  handle  for  some mailing software, and generally just looks
6107              like ordinary text.  To actually make use of this format's  fea‐
6108              tures, you'll need support in your editor.
6109
6110              The  option  only  controls  newly composed messages.  Postponed
6111              messages, resent messages, and draft messages  (via  -H  on  the
6112              command line) will use the content-type of the source message.
6113
6114              Note that $indent_string is ignored when this option is set.
6115
6116
6117
6118       thorough_search
6119              Type: boolean
6120              Default: yes
6121
6122              Affects  the  ~b, ~B, and ~h search operations described in sec‐
6123              tion “patterns”.  If set, the headers  and  body/attachments  of
6124              messages  to be searched are decoded before searching. If unset,
6125              messages are searched as they appear in the folder.
6126
6127              Users searching attachments or for non-ASCII  characters  should
6128              set  this  value because decoding also includes MIME parsing/de‐
6129              coding and possible character set  conversions.  Otherwise  mutt
6130              will  attempt to match against the raw message received (for ex‐
6131              ample quoted-printable encoded or with  encoded  headers)  which
6132              may lead to incorrect search results.
6133
6134
6135
6136       thread_received
6137              Type: boolean
6138              Default: no
6139
6140              When  set, mutt uses the date received rather than the date sent
6141              to thread messages by subject.
6142
6143
6144
6145       tilde
6146              Type: boolean
6147              Default: no
6148
6149              When set, the internal-pager will pad blank lines to the  bottom
6150              of the screen with a tilde (“~”).
6151
6152
6153
6154       time_inc
6155              Type: number
6156              Default: 0
6157
6158              Along  with  $read_inc,  $write_inc, and $net_inc, this variable
6159              controls the frequency with  which  progress  updates  are  dis‐
6160              played.  It  suppresses updates less than $time_inc milliseconds
6161              apart. This can improve throughput on systems with  slow  termi‐
6162              nals, or when running mutt on a remote system.
6163
6164              Also see the “tuning” section of the manual for performance con‐
6165              siderations.
6166
6167
6168
6169       timeout
6170              Type: number
6171              Default: 600
6172
6173              When Mutt is waiting for user input either idling in menus or in
6174              an  interactive prompt, Mutt would block until input is present.
6175              Depending on the context, this would prevent certain  operations
6176              from working, like checking for new mail or keeping an IMAP con‐
6177              nection alive.
6178
6179              This variable controls how many seconds Mutt will at  most  wait
6180              until it aborts waiting for input, performs these operations and
6181              continues to wait for input.
6182
6183              A value of zero or less will cause Mutt to never time out.
6184
6185
6186
6187       tmpdir
6188              Type: path
6189              Default: “”
6190
6191              This variable allows you to specify where Mutt  will  place  its
6192              temporary  files  needed  for displaying and composing messages.
6193              If this variable is not set, the environment variable $TMPDIR is
6194              used.  If $TMPDIR is not set then “/tmp” is used.
6195
6196
6197
6198       to_chars
6199              Type: string
6200              Default: “ +TCFL”
6201
6202              Controls  the  character used to indicate mail addressed to you.
6203              The first character is the one used when the  mail  is  not  ad‐
6204              dressed  to  your  address.  The second is used when you are the
6205              only recipient of the message.  The third is when  your  address
6206              appears  in the “To:” header field, but you are not the only re‐
6207              cipient of the message.  The fourth character is used when  your
6208              address  is specified in the “Cc:” header field, but you are not
6209              the only recipient.  The fifth character  is  used  to  indicate
6210              mail that was sent by you.  The sixth character is used to indi‐
6211              cate when a mail was sent to a mailing-list you subscribe to.
6212
6213
6214
6215       trash
6216              Type: path
6217              Default: “”
6218
6219              If set, this variable specifies the path  of  the  trash  folder
6220              where  the  mails  marked for deletion will be moved, instead of
6221              being irremediably purged.
6222
6223              NOTE: When you delete a message in the trash folder, it  is  re‐
6224              ally deleted, so that you have a way to clean the trash.
6225
6226
6227
6228       ts_icon_format
6229              Type: string (localized)
6230              Default: “M%?n?AIL&ail?”
6231
6232              Controls  the format of the icon title, as long as “$ts_enabled”
6233              is set.  This string is identical in formatting to the one  used
6234              by “$status_format”.
6235
6236
6237
6238       ts_enabled
6239              Type: boolean
6240              Default: no
6241
6242              Controls  whether mutt tries to set the terminal status line and
6243              icon name.  Most terminal emulators emulate the status  line  in
6244              the window title.
6245
6246
6247
6248       ts_status_format
6249              Type: string (localized)
6250              Default: “Mutt with %?m?%m messages&no messages?%?n? [%n NEW]?”
6251
6252              Controls  the  format of the terminal status line (or window ti‐
6253              tle), provided that “$ts_enabled” has been set. This  string  is
6254              identical in formatting to the one used by “$status_format”.
6255
6256
6257
6258       tunnel
6259              Type: string
6260              Default: “”
6261
6262              Setting  this  variable will cause mutt to open a pipe to a com‐
6263              mand instead of a raw socket. You may be able to use this to set
6264              up  preauthenticated  connections to your IMAP/POP3/SMTP server.
6265              Example:
6266
6267
6268              set tunnel=”ssh -q mailhost.net /usr/local/libexec/imapd”
6269
6270
6271              Note: For this example to work you must be able to log in to the
6272              remote machine without having to enter a password.
6273
6274              When  set,  Mutt  uses  the  tunnel  for all remote connections.
6275              Please see “account-hook” in the manual for how to use different
6276              tunnel commands per connection.
6277
6278
6279
6280       tunnel_is_secure
6281              Type: boolean
6282              Default: yes
6283
6284              When  set, Mutt will assume the $tunnel connection does not need
6285              STARTTLS to be enabled.  It will also allow IMAP PREAUTH  server
6286              responses  inside  a  tunnel to proceed.  This is appropriate if
6287              $tunnel uses ssh or directly invokes the server locally.
6288
6289              When unset,  Mutt  will  negotiate  STARTTLS  according  to  the
6290              ssl_starttls  and  ssl_force_tls variables.  If ssl_force_tls is
6291              set, Mutt will abort connecting if an IMAP server responds  with
6292              PREAUTH.   This  setting is appropriate if $tunnel does not pro‐
6293              vide security and could be tampered with by attackers.
6294
6295
6296
6297       uncollapse_jump
6298              Type: boolean
6299              Default: no
6300
6301              When set, Mutt will jump to the next  unread  message,  if  any,
6302              when the current thread is uncollapsed.
6303
6304
6305
6306       uncollapse_new
6307              Type: boolean
6308              Default: yes
6309
6310              When  set,  Mutt  will  automatically  uncollapse  any collapsed
6311              thread that receives a newly  delivered  message.   When  unset,
6312              collapsed  threads  will  remain  collapsed. The presence of the
6313              newly delivered message will still affect index sorting, though.
6314
6315
6316
6317       use_8bitmime
6318              Type: boolean
6319              Default: no
6320
6321              Warning: do not set this variable unless you are using a version
6322              of sendmail which supports the -B8BITMIME flag (such as sendmail
6323              8.8.x) or you may not be able to send mail.
6324
6325              When set, Mutt will invoke $sendmail with  the  -B8BITMIME  flag
6326              when sending 8-bit messages to enable ESMTP negotiation.
6327
6328
6329
6330       use_domain
6331              Type: boolean
6332              Default: yes
6333
6334              When  set,  Mutt  will qualify all local addresses (ones without
6335              the “@host” portion) with the value of $hostname.  If unset,  no
6336              addresses will be qualified.
6337
6338
6339
6340       use_envelope_from
6341              Type: boolean
6342              Default: no
6343
6344              When  set, mutt will set the envelope sender of the message.  If
6345              $envelope_from_address is set, it will be used as the sender ad‐
6346              dress. If unset, mutt will attempt to derive the sender from the
6347              “From:” header.
6348
6349              Note that this information is passed to sendmail  command  using
6350              the -f command line switch. Therefore setting this option is not
6351              useful if the $sendmail variable already contains -f or  if  the
6352              executable  pointed  to  by  $sendmail  doesn't  support  the -f
6353              switch.
6354
6355
6356
6357       use_from
6358              Type: boolean
6359              Default: yes
6360
6361              When set, Mutt will generate the “From:” header field when send‐
6362              ing  messages.  If unset, no “From:” header field will be gener‐
6363              ated unless the user explicitly sets one using the “my_hdr” com‐
6364              mand.
6365
6366
6367
6368       use_ipv6
6369              Type: boolean
6370              Default: yes
6371
6372              When set, Mutt will look for IPv6 addresses of hosts it tries to
6373              contact.  If this option is unset, Mutt will restrict itself  to
6374              IPv4 addresses.  Normally, the default should work.
6375
6376
6377
6378       user_agent
6379              Type: boolean
6380              Default: no
6381
6382              When  set, mutt will add a “User-Agent:” header to outgoing mes‐
6383              sages, indicating which version of mutt was used  for  composing
6384              them.
6385
6386
6387
6388       visual
6389              Type: path
6390              Default: “”
6391
6392              Specifies  the  visual editor to invoke when the “~v” command is
6393              given in the built-in editor.
6394
6395
6396
6397       wait_key
6398              Type: boolean
6399              Default: yes
6400
6401              Controls whether Mutt will ask you to press a key after  an  ex‐
6402              ternal  command  has been invoked by these functions: <shell-es‐
6403              cape>,  <pipe-message>,   <pipe-entry>,   <print-message>,   and
6404              <print-entry> commands.
6405
6406              It  is also used when viewing attachments with “auto_view”, pro‐
6407              vided that the corresponding mailcap entry has  a  needsterminal
6408              flag, and the external program is interactive.
6409
6410              When  set, Mutt will always ask for a key. When unset, Mutt will
6411              wait for a key only if the external command returned a  non-zero
6412              status.
6413
6414
6415
6416       weed
6417              Type: boolean
6418              Default: yes
6419
6420              When set, mutt will weed headers when displaying, forwarding, or
6421              replying to messages.
6422
6423              Also  see   $copy_decode_weed,   $pipe_decode_weed,   $print_de‐
6424              code_weed.
6425
6426
6427
6428       wrap
6429              Type: number
6430              Default: 0
6431
6432              When set to a positive value, mutt will wrap text at $wrap char‐
6433              acters.  When set to a negative value, mutt will  wrap  text  so
6434              that there are $wrap characters of empty space on the right side
6435              of the terminal. Setting it to zero makes mutt wrap at the  ter‐
6436              minal width.
6437
6438              Also see $reflow_wrap.
6439
6440
6441
6442       wrap_headers
6443              Type: number
6444              Default: 78
6445
6446              This  option specifies the number of characters to use for wrap‐
6447              ping an outgoing message's headers. Allowed values  are  between
6448              78 and 998 inclusive.
6449
6450              Note:  This  option usually shouldn't be changed. RFC5233 recom‐
6451              mends a line length of 78 (the default), so please  only  change
6452              this setting when you know what you're doing.
6453
6454
6455
6456       wrap_search
6457              Type: boolean
6458              Default: yes
6459
6460              Controls whether searches wrap around the end.
6461
6462              When  set,  searches  will wrap around the first (or last) item.
6463              When unset, incremental searches will not wrap.
6464
6465
6466
6467       wrapmargin
6468              Type: number
6469              Default: 0
6470
6471              (DEPRECATED) Equivalent to setting $wrap with a negative value.
6472
6473
6474
6475       write_bcc
6476              Type: boolean
6477              Default: no
6478
6479              Controls whether mutt writes out the “Bcc:” header when  prepar‐
6480              ing  messages  to be sent.  Some MTAs, such as Exim and Courier,
6481              do not strip the “Bcc:” header; so it is advisable to leave this
6482              unset  unless you have a particular need for the header to be in
6483              the sent message.
6484
6485              If mutt is set to deliver directly  via  SMTP  (see  $smtp_url),
6486              this  option  does nothing: mutt will never write out the “Bcc:”
6487              header in this case.
6488
6489              Note this option only affects the sending of  messages.   Fcc'ed
6490              copies of a message will always contain the “Bcc:” header if one
6491              exists.
6492
6493
6494
6495       write_inc
6496              Type: number
6497              Default: 10
6498
6499              When  writing  a  mailbox,  a  message  will  be  printed  every
6500              $write_inc  messages  to indicate progress.  If set to 0, only a
6501              single message will be displayed before writing a mailbox.
6502
6503              Also see the $read_inc, $net_inc and $time_inc variables and the
6504              “tuning” section of the manual for performance considerations.
6505
6506
6507

SEE ALSO

6509       iconv(1),   iconv(3),   mailcap(5),   maildir(5),   mbox(5),   mutt(1),
6510       printf(3), regex(7), strftime(3)
6511
6512       The Mutt Manual
6513
6514       The Mutt home page: http://www.mutt.org/
6515

AUTHOR

6517       Michael Elkins, and others.  Use <mutt-dev@mutt.org> to contact the de‐
6518       velopers.
6519
6520
6521
6522Unix                             January 2019                        muttrc(5)
Impressum