Michael Tsai has released SpamSieve 2.1.3, an update to his Bayesian spam filtering utility for popular email clients such as Apple Mail, Mailsmith, Entourage, PowerMail, and Eudora 6. The new version adds menu commands for easily installing plug-ins and AppleScript support files, faster processing of messages, support for Outlook Express 5, keyboard shortcuts for Apple Mail scripts, and more. SpamSieve sells for US$25.