Le lien source : http://www.mutt.org/doc/manual/#patterns

Pattern modifier Description
~A all messages
~b EXPR messages which contain EXPR in the message body )
=b STRING If IMAP is enabled, like ~b but searches for STRING on the server, rather than downloading each message and searching it locally.
~B EXPR messages which contain EXPR in the whole message )
=B STRING If IMAP is enabled, like ~B but searches for STRING on the server, rather than downloading each message and searching it locally.
~c EXPR messages carbon-copied to EXPR
%c GROUP messages carbon-copied to any member of GROUP
~C EXPR messages either to: or cc: EXPR
%C GROUP messages either to: or cc: to any member of GROUP
~d [MIN]-[MAX] messages with “date-sent” in a Date range
~D deleted messages
~e EXPR messages which contains EXPR in the “Sender” field
%e GROUP messages which contain a member of GROUP in the “Sender” field
~E expired messages
~F flagged messages
~f EXPR messages originating from EXPR
%f GROUP messages originating from any member of GROUP
~g cryptographically signed messages
~G cryptographically encrypted messages
~h EXPR messages which contain EXPR in the message header )
=h STRING If IMAP is enabled, like ~h but searches for STRING on the server, rather than downloading each message and searching it locally; STRING must be of the form “header: substring” (see below).
~H EXPR messages with a spam attribute matching EXPR
~i EXPR messages which match EXPR in the “Message-ID” field
~k messages which contain PGP key material
~L EXPR messages either originated or received by EXPR
%L GROUP message either originated or received by any member of GROUP
~l messages addressed to a known mailing list
~m [MIN]-[MAX] messages in the range MIN to MAX )
~M EXPR messages which contain a mime Content-Type matching EXPR **)
~n [MIN]-[MAX] messages with a score in the range MIN to MAX )
~N new messages
~O old messages
~p messages addressed to you (consults $from, alternates, and local account/hostname information)
~P messages from you (consults $from, alternates, and local account/hostname information)
~Q messages which have been replied to
~r [MIN]-[MAX] messages with “date-received” in a Date range
~R read messages
~s EXPR messages having EXPR in the “Subject” field.
~S superseded messages
~t EXPR messages addressed to EXPR
~T tagged messages
~u messages addressed to a subscribed mailing list
~U unread messages
~v messages part of a collapsed thread.
~V cryptographically verified messages
~x EXPR messages which contain EXPR in the “References” or “In-Reply-To” field
~X [MIN]-[MAX] messages with MIN to MAX attachments ) )
~y EXPR messages which contain EXPR in the “X-Label” field
~z [MIN]-[MAX] messages with a size in the range MIN to MAX *) **)
~= duplicated messages (see $duplicate_threads)
~$ unreferenced messages (requires threaded view)
~(PATTERN) messages in threads containing messages matching PATTERN, e.g. all threads containing messages from you: ~(~P)
~<(PATTERN) messages whose immediate parent matches PATTERN, e.g. replies to your messages: ~<(~P)
~>(PATTERN) messages having an immediate child matching PATTERN, e.g. messages you replied to: ~>(~P)