Version 1.1a6 of the SpamBayes project is now available.

Although this is still labelled as an alpha release it is really quite stable. If you want to use an older version of SpamBayes, check the files section of the project site. If you have any issues with the software, send feedback to

You may like to view the release notes or the files that make up the 1.0.4 release.

Microsoft Windows

Microsoft Windows users are encouraged to use the installation program to install SpamBayes. This will install applications suitable for almost all email clients, including Microsoft Outlook and Microsoft Outlook Express.

Please see our Windows pages, or jump directly to the file releases for this project.

Source Releases

The source-code releases can be used on any platform with a Python interpreter

The source-code releases can be downloaded, as either a gzipped tarball or a zip file, directly from the file releases for this project.


  • Python 2.2.2 or above, or a Subversion build of python, or
  • Python 2.2, 2.2.1, plus the latest email package.

Once you've downloaded and unpacked the source archive, do the regular build; install dance, then:

  • if you're running Outlook2000, change to the Outlook2000 directory and run ''. See the 'about.html' file in the Outlook2000 directory for more.
  • otherwise, consult the README.txt file in the package and choose the method that suits your setup best.

Files, MD5 checksums, signatures and sizes

The signatures below were generated with GnuPG using release manager Tony Meyer's public key, which has a key id of F23F732A.

You can import the release manager public keys by either downloading the public key file and then running

% gpg --import TonyMeyer.asc

or by grabbing the key directly from the keyserver network by running this command:

% gpg --recv-keys F23F732A

To verify the authenticity of the download, grab both the file(s) and the signature(s) (above) and then run this command:

% gpg --verify spambayes-1.0.2.exe.asc

Note that you must use the name of the signature file, and you should use the one that's appropriate to the download you're verifying.

These instructions are geared to GnuPG and command-line weenies. Suggestions are welcome for other OpenPGP applications.

Subversion Access

The code is currently available from the SourceForge Subversion server.