Spam Bully for Outlook uses a sophisticated Bayesian e-mail spam filter tested on more than 35,000 spam emails. It then uses an intelligent self-learning spam filter to conform to your e-mail habits. Other features include auto bouncing of known spam messages, querying of questionable e-mail, friends/spammers list, blocking of spammers who have sent you spam in the past, attachment blocking for virus protection, and comprehensive spam reporting..