Cactus Spam Filter is a free easy-to-use spam blocker. It protects your inbox by learning to detect spam as it’s being used. After a short while it has adapted to your personal mailbox and blocks out most of the junk e-mail. Since the filter becomes personal, spammers will not be able to fool it.
Cactus Spam Filter will efficiently filter spam e-mail by tagging their subject line. The user can easily setup the e-mail client to automatically move such messages into a junk folder or directly to the recycle bin. This anti-spam program learns to detect spam as it’s being used, and believe me, Cactus Spam Filter is a fast learner. After a few e-mails it will start to make its own decisions to relieve you from the spam burden.