Mailman, the GNU Mailing List Manager

Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more. See the features page for details.

Mailman is free software, distributed under the GNU General Public License. Mailman is written in the Python programming language, with a little bit of C code for security.

The name of this software is spelled Mailman with a capital leading M and a lowercase second m. It is incorrect to spell it "MailMan" (i.e. you should not use StudlyCaps).

See the Security page for important security related information, including critical patches and contact information for reporting suspected security vulnerabilities.

Current Version

The current stable GNU Mailman version is 2.1.5, released on 15-May-2004. If you are running this version you want to read the security notice.

Version 2.1.6rc2, (released on 22-Apr-2005) is the current patch development release.

Acknowledgements

Mailman's lead developer is Barry Warsaw who can be contacted barry at python dot org.

Thanks go to Control.com for their sponsorship of new Mailman 2.1 features such as the topic filters, external membership sources, and "virtual" mailing lists. Also, a huge thanks goes out to my employer Zope Corporation for their support, as well as the list of contributors, bug hunters, big idea people, and others who have helped immensely with Mailman's development.