When a user creates another GPG key, attached to the email address linked to a older GPG key, Claws-Mail accepts to send encrypted emails, but not signed ones (wether or not encrypted) : ** (claws-mail:7004): WARNING **: ambiguous specification of secret key
what's the bug here?
use the account prefs to either 'use default GnuPG key' if you've set one in gpg.conf, or 'Specify key manually' using the key ID.