Wow. In the early 90s, I was responsible to connect the first Rumanian universities (Bucharest, in particular) to the Internet. Since we couldn't get IP going for various technical reasons, we decided to get them email in the mean time, at least.
The first try was with uucp, but they couldn't handle its operations on the Bucharest side. Phone lines weren't stable enough, then. So, for the 1st 6 months, email was sent to Bucharest by Kermit file transfer, triggered by a hodge-podge of MDA scripts, invoked by sendmail. Kermit was way more robust than any other file transfer protocol at this time, we believed eventually it could handle bit transfers over wet clothes lines.
After 6 months, we got uucp going, after getting more help with the network connection from government and EU. Some more months later, we got IP going. Those of you who take always-online for granted don't know at all what effort it takes to make that work.
Ah, I think I'm getting old. Get off my lawn... :-) :-) :-)