+@item C-c C-f C-a
+@kindex C-c C-f C-a
+@findex message-generate-unsubscribed-mail-followup-to
+Insert a reasonable @samp{Mail-Followup-To:} header
+(@pxref{Mailing Lists}) in a post to an
+unsubscribed list. When making original posts to a mailing list you are
+not subscribed to, you have to type in a @samp{Mail-Followup-To:} header
+by hand. The contents, usually, are the addresses of the list and your
+own address. This function inserts such a header automatically. It
+fetches the contents of the @samp{To:} header in the current mail
+buffer, and appends the current @code{user-mail-address}.
+
+If the optional argument @code{include-cc} is non-@code{nil}, the
+addresses in the @samp{Cc:} header are also put into the
+@samp{Mail-Followup-To:} header.
+
+@end table
+
+@subsection Commands to change headers
+
+@table @kbd
+
+@item C-c C-o
+@kindex C-c C-o
+@findex message-sort-headers
+@vindex message-header-format-alist
+Sort headers according to @code{message-header-format-alist}
+(@code{message-sort-headers}).
+
+@item C-c C-t
+@kindex C-c C-t
+@findex message-insert-to
+Insert a @code{To} header that contains the @code{Reply-To} or
+@code{From} header of the message you're following up
+(@code{message-insert-to}).
+
+@item C-c C-n
+@kindex C-c C-n
+@findex message-insert-newsgroups
+Insert a @code{Newsgroups} header that reflects the @code{Followup-To}
+or @code{Newsgroups} header of the article you're replying to
+(@code{message-insert-newsgroups}).
+
+@item C-c C-l
+@kindex C-c C-l
+@findex message-to-list-only
+Send a message to the list only. Remove all addresses but the list
+address from @code{To:} and @code{Cc:} headers.
+
+@item C-c M-n
+@kindex C-c M-n
+@findex message-insert-disposition-notification-to
+Insert a request for a disposition
+notification. (@code{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.
+