Apache SpamAssassinApache Software Foundation
Open sourceOpen source mail filter that scores messages using rules and Bayesian analysis to detect spam.
Email Spam Filtering Tools
Ranking methodology
In development — no version effective yet.
Decision archetype: security · Scores are category-relative (P-01) and commercial relationships never affect rank (P-04).
Tools (3)
MailWasherFiretrust
Desktop spam filter that previews and removes unwanted mail before it is downloaded.
SpamTitanTitanHQ
Anti-spam email gateway that filters malicious and unwanted mail for businesses and MSPs.
Some filter definitions for this category are not yet linked to a data field and are hidden until they are.