Dartmouth, I remember a talk about it not related to security it was one of the most late 80’s early 90’s “internet revolution” things I’ve seen in my life.
Indeed. It was actually a great system that sat somewhere between email and IM in its usage on campus. The Windows and Mac clients had notifier processes that would signal the client to poll if the server alerted them to new messages. It made messages appear nearly instantly which they did not back in the POP/IMAP time-based polling days.