I don't think he uses any, particularly since he is only connected to the internet 2-3 times a day. He uses Emacs for all his mail and, presumably, contact man

I don't think he uses any, particularly since he is only connected to the internet 2-3 times a day. He uses Emacs for all his mail and, presumably, contact management. Last I knew, he was still using RMail, not even something newer like Gnus.