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The #1 Enterprise Open-Source Spam Filter


Upgrading From an Older Version?

If so, please take the time to read Upgrade Notes while you're downloading.

Product Information

The core distribution consists of command line tools to perform filtering along with Mail::SpamAssassin, a set of perl modules which allow SpamAssassin to be used in a wide range of products.

System Administrators

Please create a local copy of the report_template text in a file named something like /etc/mail/spamassassin/, and modify it to provide your tech support desk's contact information, instead of the default. Otherwise your users will be confused, and some may ultimately contact the SpamAssassin development team, which is not appreciated; we cannot help them with whitelisting/blacklisting/customisation of settings at your site, after all. The default report text can be found in the file rules/


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Other mirrors:

You may also consult the complete list of mirrors.

Released version, 3.4.4

Previously Released Branch version, 3.3.2

NOTE: This version is no longer supported. See for more information.


Latest bleeding-edge code

The latest development version can be obtained at any given time from the SpamAssassin Subversion (SVN) repository. See for more information.

Nightly snapshots are no longer available.

GPG Signing Key

If you want to use GPG to verify the downloads listed above, please use the SpamAssassin Release GPG Keys to verify them.

Note: GnuPG 1.4.0, and possibly 1.3.x versions, seem to have problems verifying certain signature files, including the type as used for SpamAssassin releases. If you are running an affected version, please verify the code using both SHA-256 & SHA-512 sum values instead, or upgrade GPG.

Old releases

Old Apache-licensed versions (from version 3.0.0 on) can be downloaded from Older, Perl-licensed versions can be found via CPAN.

An Apache Project

Copyright © 2003-2018 The Apache Software Foundation. All rights reserved.
Apache, Apache SpamAssassin, and the Apache SpamAssassin logo are registered trademarks or trademarks of The Apache Software Foundation in the U.S. and/or other countries.