You can filter your email using a bayesian like statistical method. Written in 100% Python, easily extensible, and is used as a pop3 proxy to reduce the intrusion on your system.
nymproxy is a set of tools for using mixmaster remailers. It provides pseudonym support to a variety of mail programs via sendmail wrappers (for MUAs such a mutt) and SMTP/POP3 proxies (for programs such as Outlook).
This is a webmail server intended for personal use (though of course, commercial use is not forbidden, it's just not my focus with this project) using secure http. Since it has its own https server built in, it does not require complex configuration.
Phasault is a EMail Tool-Client, which provides some features you can't see in other E-mail Clients. Coded in Pythonusing Tk as GUI. Works in Win32 and Unix/Linux (with python interpreter installed), and also planning to create stand-alone distribution o