Spam Bully is anti-spam software made by Axaware, LLC. SpamBully uses Bayesian filtering to separate good emails from spam emails. It also uses Allow/Block lists to determine which emails should go to a user's Inbox. Other popular features include the ability to report spammers to their providers and the FTC, the option of converting the SpamBully toolbar into a variety of languages including Spanish, German, Italian and Russian.
References
Spam Bully Wikipedia(Text) CC BY-SA