squeak,
I am indeed correct. There was no “Internet” until the ’80’s. So whatever e-mail address you had was a non-internet e-mail address. (May have been ARPANET, the Internet’s predecessor, but that would entail a University with a DoD affiliation.)
In the ’90’s I spoke to Jon Postel several times and corresponded with other Internet “founding fathers” (Paul Mockapetris, Paul Vixie, Vint Cerf) as well as top official at the Department of Commerce after they assumed jurisdiction of Internet governance issues from the National Science Foundation.