Install mailman by entering the following commands in the terminal:
sudo apt update sudo apt install mailman
Description:
Web-based mailing list manager (legacy branch)
The GNU Mailing List Manager, which manages email discussion lists. Mailman gives each mailing list a web page, and allows users to subscribe, unsubscribe, etc. over the web. The list manager can administer his or her list entirely from the web. . Mailman also integrates most things people want to do with mailing lists, including archiving, mail <-> news gateways, and so on. It has all of the features you expect from such a product, plus integrated support for the web (including web based archiving), automated bounce handling and integrated spam prevention. . Note that this package contains the legacy (2.x) branch of Mailman. All new development happens in the Mailman 3 suite, available in Debian via the mailman3 metapackage.
Homepage: http://www.list.org/
Version: 1:2.1.26-1
Section: mail