Mailman is a popular mailing list script. Mailing lists are an ideal tool for communication between far-flung participants and can be about anything you want. Mailman allows you to set up a mailing list with a large number of configurable options, such as who is on the list, where mailing lists messages are sent, and whether you include welcoming messages to new subscribers. The Mailman documentation, which is incorporated into its Administration panel, is clear and helpful, and should be referred to for all questions about using the script. The instructions in CPanel deal with how to set up, modify, and delete a Mailman mailing list.