A listserv is a way to share information via electronic mail with many people, usually on a specific topic or for a specific purpose. People choose to be part of a listserv by subscribing to the list. The single, central e-mail address for the list is also referred to as a mail reflector. Working with mailing lists involves several e-mail addresses. This is the address to which messages are sent for dissemination to the entire mailing list.
Subscribers can send a reply either directly to the author of the message, or to the entire list.