Michael Tsai has released SpamSieve 2.3.2, an update to his Bayesian spam filtering utility for popular email clients such as Apple Mail, Mailsmith, Entourage, PowerMail, and Eudora. The new version offers numerous changes, including: various improvements to the utility’s accuracy, added an option to quit when the email client quits, speed improvements to filtering when Growl notifications are enabled. SpamSieve is priced at US$25 and requires Mac OS X 10.2 or later (10.3.5 or later recommended).