-
Listserv (noun)
A type of electronic mailing list, allowing for distribution of email to many subscribers.
-
Listserve (noun)
An electronic mailing list using the medium of e-mail.
Wiktionary
-
Listserv (noun)
an application that distributes messages to subscribers on an electronic mailing list.
-
Listserv (noun)
an electronic mailing list.
Oxford Dictionary