Michael Tsai has released SpamSieve 2.1.2, an update to his Bayesian spam filtering utility for popular email clients such as Apple Mail, Mailsmith, Entourage, PowerMail, and Eudora 6. Version 2.1.2 can now move Apple Mail POP messages to the Spam folder, so it now fully supports Apple Mail on Jaguar and Panther. The update also offers several other enhancements and bug fixes, all of which can be found here. SpamSieve sells for US$25.