Anti-Spam Desktop Universal

From Mailshell:

The Mailshell Anti-Spam and Anti-Phishing Engine is deployed by over 4,000 companies and 10 million end-users worldwide. Near 100% accuracy. Integrates easily with Outlook Express. Supports Hotmail and MSN accounts. Works with any POP mail client including Netscape Messenger, Pegasus, Bat, Opera and Eudora. Features include intelligent training, real-time community filtering, custom filtering strength, automatic rule updates, support for public blacklists (RBLs), country blocking, language blocking, and custom friends/spammer lists. Easily report spam, viruses, and fraudulent emails.

Version 3.3c features enhancements to make spam management easier, improved accuracy, and optional automatic anti-spam engine updates.