mc-sign will clearsign a message in the current
mc-write-mode binds this function to C-c / s by
When this function is called, Mailcrypt will prompt you for the appropriate passphrase unless it is cached (see Passphrase Cache).
Mailcrypt will then pass the message to PGP for processing. Mailcrypt
will call the functions listed in
mc-post-signature-hook immediately before and after processing,
respectively. The signed message will replace the original message in
the buffer. Do not edit the message further with the signature
attached, because the signature would then be incorrect. If you
discover you need to edit a message after you have signed it, remove the
signature first with the normal Emacs undo command C-x u
(see Emacs Undo).
mc-pgp-user-id controls which secret key is used for
signing; it is described in Encrypting.
To use a different secret key, pass a prefix argument to
(That is, type C-u C-c / s.) Mailcrypt will prompt for a string
and will sign with the first key on your secret keyring which matches