SpamSieve

SpamSieve Publisher's Description:
SpamSieve gives you back your inbox by bringing powerful Bayesian spam filtering to popular e-mail clients. It learns what your spam looks like, so it can block nearly all of it. It looks at your address book and learns what your good messages look like, so it won't confuse them with spam. Other spam filters get worse over time as spammers adapt to their rules; SpamSieve actually gets better over time as you train it with more messages. SpamSieve doesn't delete any messages--it only marks them in your e-mail client--so you'll never lose any mail. SpamSieve works with any number of mail accounts, of whatever types are supported by your e-mail software (e.g. POP, IMAP, Hotmail, AOL).

What's new in this version:

* Made lots of changes to the parser and classifiers to improve accuracy, especially for HTML and image messages.
* The in-memory corpus representation is much more efficient, which should lead to lower memory use and greater speed.
* Rewrote the Software Update feature. When a new version is available, it can now show you the release notes. SpamSieve now downloads the new version itself, rather than relying on your browser. On 10.3 and later, the Download & Install button will cause SpamSieve to auto-update itself to the latest version.
* Improved accuracy on messages containing misspelled words.
* Now requires Mac OS X 10.2.8 or later.
* Auto-training now places a higher priority on corpus balance compared to learning from novel messages.