There was a time when email listservs were the new kid on the block.
Short for "mailing list server," your listserv has probably served your association or membership organization well over the last decade or two. You've been able to easily send out automated emails to segmented lists and your members have enjoyed reply-all options that allow them to easily communicate with the group.
During their heyday, listservs made a huge difference in member interaction and association communication. However, they're now competing with new options that have additional opportunities for member engagement and membership value.