World Wide Messenger
World Wide Messenger allows you to run a Hotmail� type service using only one POP box. No extra modules required, not even Sendmail. Features: Access mail with mail clients, calendar, auto-hyperlinking, storage meter, Text to speech, full incoming/outgoing MIME compatibility, mail encryption, rich text editor, template driven, multiple templates, unlimited user folders, complete admin section, multiple domain support, contact list, signatures, POP Checker, WAP enabled, and more.