Welcome to the home page for the open-source Apache SpamAssassin Project. Apache SpamAssassin is the #1 Open Source anti-spam platform giving system administrators a filter to classify email and block spam (unsolicited bulk email). It uses a robust scoring framework and plug-ins to integrate a wide range of advanced heuristic and statistical analysis tests on email headers and body text including
![Apache SpamAssassin: Welcome](https://cdn-ak-scissors.b.st-hatena.com/image/square/0fc05a8792c1da3a7bbfa63b2524855540e2062c/height=288;version=1;width=512/https%3A%2F%2Fspamassassin.apache.org%2Flogo%2F512-powered-by-spamassassin.png)