SpamCatcher seamlessly integrates with Outlook. Checks between 1000 and 100,000 rules per message to accurately detect spam. Automatically updates new rules from the Mailshell SpamLabs. User can train SpamCatcher to learn what is and what is not spam. The optional Mailshell Web service supports AOL, Hotmail, Yahoo, and IMAP e-mail accounts. If you don't use Outlook, Outlook Express for example, get the SpamCatcher POP Anti-Spam or Enterprise Suite version instead. The core SpamCatcher Engine is also available for licensing into third-party products.

Version 2.7c includes major improvements to accuracy and minor bug fixes.