the inline method mailcrypt uses for signatures
is rather archaic and annoying for users unaware
of GPG signatures; would it be possible to move towards
the attachement-based method? e.g.:
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
[content]
Content-Type: application/pgp-signature;
name="signature.asc"
Content-Description: Digital signature
Content-Disposition: inline
[signature of content]