Daniels Blog

Link: http://getpopfile.org/

POPFile lets you easily handle your POP/IMAP email incoming folders and filters your mails into "buckets".

It allows more than the usual "spam" / "ham" buckets - you can use it to filter by language, too.

I have quite a special email setup, and it says currently:

Messages classified:   108,230
Classification errors: 2,948
Accuracy:              97.27% 

My buckets are: b2evo, backscatter, bugs, jedit, logspam, newsletter, personal, server, spam, traffic-watch, ubuntu, ubuntu-ack

Training messages into new buckets is as easy as moving them into another folder, when using IMAP - the POPFile process will recognize the movement and re-train this message.

If you're still using POP3, POPFile is a nice application anyway (it can be used as a proxy), but please consider switching to IMAP for your own sake.