Michael Tsai has released version 2.4 of SpamSieve, his Bayesian spam filter for Apple Mail, Microsoft Entourage and Outlook 5, Emailer, Eudora, GyazMail, Mailsmith and PowerMail. This update provides a universal binary to the Apple Mail plug-in, which will allow SpamSieve users to run Apple Mail on Intel Macs without resorting to Rosetta.
Other changes include accuracy improvements in the Bayesian filter engine, heuristics for detecting "phishing" scams, the ability to file Apple Mail messages in different mailboxes based on their "spammines," support for Habeas headers, a change to the Software Update alert that keeps it from interfering with spam filtering, and more.
This is a free update for registered owners of SpamSieve. The full software is US$25 and requires Mac OS X v10.2.8 (v10.3.5 recommended).