1)   Cloudmark SafetyBar for Outlook 4.2
Cloudmark SafetyBar (formerly SpamNet), the most award-winning protection, stops over 98% of spam, fraud, phishing attacks and all email threats automatically and is the only solution to achieve zero false positives in industry reviews.

 2)   Purgy 1.0
Anti-spam software for Windows. It accepts emails from senders you trust while asking unknown senders to verify themselves by replying to an email. After positive verification it adds them to your approved sender list and delivers all their messages.