GNU Mailman

GNU Mailman is a computer software application from the GNU Project for managing electronic mailing lists.<ref name="http://freshmeat.net"></ref><ref name="http://www.gnu.org"></ref>
Mailman is coded primarily in Python and currently maintained by Abhilash Raj. Mailman is free software, licensed under the GNU General Public License.
History.
A very early version of Mailman was written by John Viega while a graduate student, who then lost his copy of the source in a hard drive crash sometime around 1998.<ref name="http://myriadicity.net"></ref> Ken Manheimer at CNRI, who was looking for a replacement for Majordomo, then took over development. When Manheimer left CNRI, Barry Warsaw took over. Mailman 3—the first major new version in over a decade—was released in April 2015.
Features.
Mailman runs on most Unix-like systems, including Linux. Since Mailman 3.0 it has required python-3.4 or newer. It works with Unix-style mail servers such as Exim, Postfix, Sendmail and qmail. Features include: