Apache SpamAssassin
The #1 Open Source anti-spam platform for classifying and blocking email spam

Apache SpamAssassin is an open-source anti-spam platform designed for system administrators to filter and block unsolicited bulk email. It employs a robust scoring framework combining heuristic analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases to evaluate email headers and body text. It is a project of the Apache Software Foundation and is widely used in server-side email filtering deployments.
SpamAssassin scores incoming emails using a combination of text analysis, Bayesian filtering, DNS blocklists, and plug-in rules to classify and block spam.
System administrators managing email servers
Background.
- Status
- launched
- Business model
- open-source
- Company
- Apache Software Foundation
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