listserv (mailing list server)
Listserv, like Majordomo , is a small program that automatically redistributes e-mail to names on a mailing list. Users can subscribe to a mailing list by sending an e-mail note to a mailing list they learn about; listserv will automatically add the name and distribute future e-mail postings to every subscriber. (Requests to subscribe and unsubscribe are sent to a special address so that all subscribers do not see these requests.) These programs are also known as list server s.