I'm glad to see that as more people starts using OpenPGP/MIME, a way to digitally sign and encrypt documents such as emails (read more about that here) people also starts looking for ways to do this for emails sent automatically from a server, not only from client to client.
I recently discovered an article on devzone.zend.com where one of my scripts at least appears in the comments.
Hopefully they are of use to someone but myself.
