G-Lock SpamCombat Anti-Spam Filter for Windows

"G-Lock SpamCombat is e-mail client independent, supports POP3 and IMAP, and can be configured to work with popular web-based e-mail services, like Hotmail and Yahoo. AOL users can use it as well. The price of registering the program is 35 US Dollars. The trial version is available as well. While the trial version works with one e-mail account only, it never expires and has no other functional limitations." Source: INewswire