Well the first E-Mail I sent was from a Honeywell L66/60 running GCOS and TSS sometime around 1985. Aberdeen University had written a "Greybook" mailer in "B". Greybook was basically RFC822 e-mail with three modifications: -
1. It used revered "big endian" names, so "uk.ac.nerc" as opposed to the modern "nerc.ac.uk". 2. It allowed "BST" or "British Summer Time" as a time zone. 3. It ran over the "Yellow Book Transport Service" which in turn ran over an x.25 network. The required an X.25 link which was provided by a PDP/11 running RSX11M. This connected to the L66 via a Synchronous line. I don't honestly remember how this worked on the Honeywell. The e-mails could be sent to several UK Universities over the Janet X.25 network. We could also send to Bitnet using a gateway which I think was at UCL. There is some information about the state of E-Mail here:- http://www.chilton-computing.org.uk/ccd/networking/bryant/p05.htm I was the system programmer who installed and maintained the software from Aberdeen. Later on I installed similar software on an IBM4381 and went on to work on the IBM implementation for Salford University, who wrote it initially at IBM's Manchester office on a 4361 and later in Salford University on IBM kit loaned to use... Dave Wade G4UGM