A lot of sites require a valid email address for registration and forcibly check that it works by having an email be part of the registration process. The Monastery is one such place. There's two ways of doing it that I've seen: generating a password which is sent to the email address (the Monks way), or sending some sort of session id in the mail which must be sent via reply to a specific address (similar to some mailing list subscribes). The first I could figure out by digging through the e2 codebase, but I'd prefer to do the latter since I've been building my registration process around that. Is there an existing way in Perl to manage that situation? I would think it would require some sort of communication with sendmail, which would be unpleasant to do again if there is an existing solution. Any help is, as always, greatly appreciated.