2.2.2 Commands to change headers

C-c C-o

Sort headers according to message-header-format-alist (message-sort-headers).

C-c C-t

Insert a To header that contains the Reply-To or From header of the message you're following up (message-insert-to).

C-c C-n

Insert a Newsgroups header that reflects the Followup-To or Newsgroups header of the article you're replying to (message-insert-newsgroups).

C-c C-l

Send a message to the list only. Remove all addresses but the list address from To: and Cc: headers.

C-c M-n

Insert a request for a disposition notification. (message-insert-disposition-notification-to). This means that if the recipient support RFC 2298 she might send you a notification that she received the message.

M-x message-insert-importance-high

Insert an `Importance' header with a value of `high', deleting headers if necessary.

M-x message-insert-importance-low

Insert an `Importance' header with a value of `low', deleting headers if necessary.

C-c C-f s

Change the current `Subject' header. Ask for new `Subject' header and append `(was: <Old Subject>)'. The old subject can be stripped on replying, see message-subject-trailing-was-query (see section 3.1 Message Headers).

C-c C-f x

Ask for an additional `Newsgroups' and `FollowUp-To' for a cross-post. message-cross-post-followup-to mangles `FollowUp-To' and `Newsgroups' header to point to group. If message-cross-post-default is nil or if called with a prefix-argument `Follow-Up' is set, but the message is not cross-posted.

C-c C-f t

Replace contents of `To' header with contents of `Cc' or `Bcc' header.

C-c C-f w

Insert `To' and `Cc' headers as if you were doing a wide reply.

C-c C-f a

Insert `X-No-Archive: Yes' in the header and a note in the body. The header and the note can be customized using message-archive-header and message-archive-note. When called with a prefix argument, ask for a text to insert. If you don't want the note in the body, set message-archive-note to nil.