LISTSERV
Know what this is.
Wikipedia explains:
The term
Listserv (written by the registered trademark
licensee, L-Soft International, Inc., as LISTSERV) has been used to
refer to a few early electronic mailing list software applications,
allowing a sender to send one
email to the list, and then transparently sending it on to the addresses of the subscribers to the list.
The original Listserv software, the Bitnic Listserv (also known as
BITNIC LISTSERV) (1984–1986), allowed mailing lists to be implemented on
IBM VM
mainframes and was developed by
Ira Fuchs,
Daniel Oberst, and Ricky Hernandez in 1984. This mailing list service
was known as Listserv@Bitnic (also known as LISTSERV@BITNIC) and quickly
became a key service on the
BITNET network. It provided functionality similar to a UNIX
Sendmail alias and, as with Sendmail, subscriptions were managed manually.
Talklist is one listserve service.
There is
lsoft.com.
Freelists.com is free.
Simplelists.com.
Librelist.com.