Buy and Download - Spam Sieve for Mac

SpamSieve gives you back your inbox by bringing powerful Bayesian spam
filtering to Mac e-mail clients. It.s quick and easy to control SpamSieve
from within your mail client, and you can customize how it interacts with
the rest of your message sorting rules. Other spam filters get worse over
time as spammers adapt to their rules; SpamSieve actually gets better over
time as it adapts to your mail. By learning from the very messages that
you receive, SpamSieve is able to block nearly all of your junk mail,
without putting your good messages in the spam mailbox.

Requires: Mac OS X 10.4 or 10.5 and an e-mail client
(older versions run on 10.2 and 10.3)

Main Features
*Powerful Bayesian spam filtering results in high accuracy and almost no
false positives. It adapts to the mail that you receive to get even better
with time. Some other e-mail clients include Bayesian filters,
but SpamSieve is more accurate.
*Integrates with your e-mail client for a superior user experience. Plus,
you get the same great filtering if you ever switch e-mail clients or use
more than one at a time.
*Integrates with the Mac OS X Address Book (and also Eudora.s and Entourage.s
address books) so that messages from friends and colleagues are never marked
as spam.
*Automatically maintains a blocklist so that it can instantly adapt to spam
messages sent from particular addresses, and catch 100% of them.
*Automatically maintains a whitelist to guarantee that messages from particular
senders or mailing lists are never marked as spam, without cluttering your
address book with these addresses.
*You can customize the whitelist and blocklist, adding sophisticated rules that
match various message headers, or the message body. The rules can match text in
a variety of ways, including using regular expressions.
*Can use the Habeas Safelist, which indicates messages that are not spam, as
well as the .ADV. subject tag indicating that a message is spam.
*Many spammers encode the contents of their messages so that filters cannot see
the incriminating words they contain. SpamSieve can decode and look inside these
messages. Optionally it can mark them all as spam, on the theory that legitimate
senders do not try to obscure their messages.
*SpamSieve keeps track of how accurate it is, how many good and spam messages you
receive, and how these numbers change over time.
*Turn off new-mail notification in your e-mail client, and let SpamSieve notify
you only when you receive non-spam messages.
*The corpus window and log let you see how each spam message was caught.

http://c-command.com/spamsieve/