The Mailshell Anti-Spam Engine is deployed by over 4,000 companies and 10 million end-users. 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.

Version 3.1p may include unspecified updates, enhancements, or bug fixes.