SpamIntelligence brings SpamAssassin 3.0 and Clam AntiVirus to Outlook. Free, automatic update functionality provides fresh virus and spam definitions on a daily basis. It stops new mail notifications for spam and hides greyed-out items in IMAP accounts. It fully supports POP3, IMAP, Exchange, and Hotmail/MSN.
Version 1.2 is the first release under the GNU GPL license.