epa: Mail-mode integration

 
 3.5 Mail-mode integration
 =========================
 
 EasyPG Assistant provides a minor mode ‘epa-mail-mode’ to help user
 compose inline OpenPGP messages.  Inline OpenPGP is a traditional style
 of sending signed/encrypted emails by embedding raw OpenPGP blobs inside
 a message body, not using modern MIME format.
 
    NOTE: Inline OpenPGP is not recommended and you should consider to
 use PGP/MIME.  See Inline OpenPGP in E-mail is bad, Mm’kay?
 (http://josefsson.org/inline-openpgp-considered-harmful.html).
 
 Once ‘epa-mail-mode’ is enabled, the following keys are assigned.  You
 can do it by ‘C-u 1 M-x epa-mail-mode’ or through the Customize
 interface.  Try ‘M-x customize-variable epa-global-mail-mode’.
 
 ‘C-c C-e C-d and C-c C-e d’
      Decrypt OpenPGP armors in the current buffer.
 
 ‘C-c C-e C-v and C-c C-e v’
      Verify OpenPGP cleartext signed messages in the current buffer.
 
 ‘C-c C-e C-s and C-c C-e s’
      Compose a signed message from the current buffer.
 
 ‘C-c C-e C-e and C-c C-e e’
      Compose an encrypted message from the current buffer.  By default
      it tries to build the recipient list from ‘to’, ‘cc’, and ‘bcc’
      fields of the mail header.  To include your key in the recipient
      list, use ‘encrypt-to’ option in ‘~/.gnupg/gpg.conf’.  This
      function translates recipient addresses using the
      ‘epa-mail-aliases’ list.  You can also use that option to ignore
      specific recipients for encryption purposes.