Filter #1 is a free plug-in for Microsoft Outlook and Outlook Express, that automatically and efficiently blocks spam. Whenever new mail arrives, it will automatically be tested by the Filter #1 server, and if it's spam, it will be moved to your spam folder. If you receive a spam mail that is not detected, push one button, and the spam mail is removed.

Filter #2

Filter #1 is an automatic e-mail classification and spam fighting tool that uses Bayesian mathematics to automatically filter e-mail into any number of categories. It works with all POP3-based e-mail and features a Web based interface for administration.