[BSDobelix]

I talk about the past, your university FTP-Server was the central point to get your Software/Manuals also publish your work (today's Github/Sourceforge?). Your university Email Server was the primary central point to exchange Information mostly inside your university.

Again i talk about the past when email was primarily used to talk to other peoples often not even over a net but inside a mainframe thing.

I though i was clear talking about the past hence not including Facebook or GitHub, and btw. Email just became "federated" when everyone agreed to use smtp when talking over the internet.