An article from Microsoft Systems Journal in 1993 ends with a bunch of different electronic mail addresses:
https://jacobfilipp.com/MSJ/1993-vol8/qawindows.pdf
By 1995, the “Internet” e-mail address was the only remaining one.
https://jacobfilipp.com/MSJ/1993-vol8/qawindows.pdf
By 1995, the “Internet” e-mail address was the only remaining one.
You could also reach us by knowing our character names on certain MUDs, which implemented a spectrum of “real time IM” to “leave a message with the bot” to “virtual room full of mailboxes which are also rooms and contain objects that are notes”.
I didn’t really use IRC, but everyone else did.