Heh, I'm so old I remember being on the first mailing list on the Internet back in 1972-73, which was (suitably meta) a mailing list about mail programs & relat

Heh, I'm so old I remember being on the first mailing list on the Internet back in 1972-73, which was (suitably meta) a mailing list about mail programs & related issues. (It was based out of BBN, whence came the first email.) The first mail servers were rather primitive: they were just (pre-TCP/IP) FTP-like servers that would open your local mailbox (on TOPS-10 in our case, at HARV-10) and append to it. Lots of interesting locking issues...