Anti-Spam SMTP Proxy Server implements multiple spam filters
Anti Spam SMTP Gateway
Remote anti spam utility
Unsubscirbes from newsletters, mailing lists and so on.
An easy-to-use anti-spam email gateway
Virtual Appliance of RadicalSpam
Open Source Anti-Spam and Anti-Virus Gateway
A program that detects and blocks phishing, pharming, Hacker's C&C.
Remove most publicity
Advertising domain filtering list