Mailman is a mailing list program, or "listserv." You may create a mailing list when you have a group or organization that needs an efficient means of communication via e-mail. Members with appropriate permissions can send an email to the list, and that email will be sent out to all others on the list, keeping everyone updated. List administrators also have access to additional features such as spam filters and moderation settings.
Who Has Access?
Anyone with an email address can join a mailing list (some lists require moderator approval before they will allow you join). If you wish to create a Mailman mailing list, you must be associated with OSU and have an ONID account.