A free app for Windows, by Extravalent.

POPFile is a very powerful, flexible, and modern tool to fight spam. It is a free application for Windows that works as a proxy between your email client and the mail server. It scans all incoming emails and sorts them into a number of categories. This allows you to filter spam easily.

What does POPFile do?

First of all, it’s a very powerful and flexible tool. POPFile can work with a number of different mail clients. It can also work with many different servers. This means that you can use POPFile to filter spam on any mail server.

Secondly, POPFile works as a proxy. This means that it can filter messages that are sent by your email client but received by another server. This can be any server, including the mail server you use.

Lastly, POPFile has a pattern system. Patterns allow you to identify a specific sender. This means that you can mark a sender as spam and it will be filtered out.

POPFile is an automatic e-mail classification and spam-fighting tool that uses Bayesian mathematics to automagically filter e-mail into any number of categories.