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, and written in the Python programming language.

We want to thank our generous list of financial donors whose contributions allowed us to send a core developer to PyCon 2015. Please consider donating to the GNU Mailman project yourself. (details)

See the Security page for important security related information, and the help page for additional resources for users, list and site administrators, and developers.

Our wiki has lots of other great information, including a FAQ.

Our Code of Conduct applies to all of our modes of discussion and collaboration, including the GNU Mailman mailing lists, wiki pages, and IRC channels.

Current Version

The current stable GNU Mailman versions are:

  • 20-Oct-2023 Mailman 3.3.9 (Tom Sawyer)
  • 13-Dec-2021 Mailman 2.1.39

Contact Us

There are various ways to get in touch with the GNU Mailman Steering Committee, our security contacts, and the Mailman developer and user communities, via IRC and email.


Mailman's lead developer is Abhilash Raj. Core developers are Barry Warsaw, Mark Sapiro, Aurélien Bompard, Florian Fuchs, Terri Oda, and Stephen J. Turnbull. We thank all of our great GSoC students and mentors, and the wider Mailman community for contributing to the development of GNU Mailman.

Thanks go out to: