I'm trying the current gnus and mailcrypt. There is some breakage. Test #1. C-x m. I'm in Message mode. Make a simple test message. From Mailcrypt menu, choose Sign Message. Send it. When I receive the message under gnus, the signature is not displayed. I have no way to know it's there! However, choosing verify sigature succeeds. Test #2. Just about the opposite result. C-x m. I'm in Message mode. Choose Message/Attach File as Mime. Attach a file. Again, Mailcrypt/Sign Message. Send. Now view under gnus. This time, the signature is visible. Good. Now try verify signature. It fails!