SpamBrave is a Bayesian-type spam filtering plug-in module for Microsoft Outlook Express. It makes a use of an intelligent Bayesian algorithm to filter out spam. SpamBrave analyses e-mails using a number of parameters and memorizes statistical data. After a couple of training days it should filter out more than 90% of unwanted e-mail messages. One of the benefits is that it evolves alongside with spam. When a spammer invents a new way of breaking the filters, you just need to tell SpamBrave that is's spam! It will automatically find a way to stop similar messages. In addition to tagging messages as spam, SpamBrave uses the Unsure folder. This significantly minimizes the risk of false positives. SpamBrave also has its own Block List to never block emails from known senders. You can check at http://www.spambrave.com