Michael Tsai has released SpamSieve 2.6, a major update to his Bayesian spam filtering utility for popular email clients such as Apple Mail, Mailsmith, Entourage, PowerMail, and Eudora. The new version offers: Mozilla Thunderbird support; improved detection of image spams and phishing messages; various message analysis improvements to increase the accuracy of the Bayesian filter; the Apple Mail plug-in is more robust; and much more. SpamSieve is priced at US$30 and requires Mac OS X 10.2.8 or later (10.3.5 or later recommended).