I love the mutt option
crypt_opportunistic_encrypt. This allows me to automatically encrypt emails to recipients for whom I have the key. (And not if I cc to a group that contains members without keys.)
However, I'd also like to automatically sign emails that I encrypt. IMO, if a recipient doesn't use PGP generally, I wouldn't encrypt, and signing would just be noise to them. However, if they do use PGP generally, I'd encrypt and sign by default. Is there a way to do this in mutt?
I looked at
crypt_autosign, which signs to all, and
crypt_replysignencrypted, which only deal with replied emails.