A message sent to a newsgroup or mailing list (may also be called "a post") or the act of sending it.Distinguished from a "letter" or ordinary electronic mail message by the fact that it is broadcast rather than point-to-point.It is not clear whether messages sent to a small mailing list are postings or e-mailperhaps the best dividing line is that if you don' t know the names of all the potential recipients, it is a posting.[Jargon File]