This name is also used when addressing mail messages. This refers to the actual body of your mail message. If a list is moderated any message is send to the list manager before distribution. The list owner decides wether the message is distributed or discarded. This makes sense if mail bombs, garbage or commercial advertisements clutter a list.
Typical requests are for instance 'subscribe', 'review', 'unsubscribe'.
A text expression recognized by the listprocessor. The name which refers to anyone using a computer.