I have always wondered ‘When the first email was sent‘ and quirky blog set up by Jarrett Green answers that plus much more!
According to Green, the first email was sent in 1971 when Ray Tomlinson sent an email from one computer, to another, sitting right next to it – through ARPANET.
Tomlinson used the @ sign to delineate what host the user receiving the message was on, as ARPANET had a number of hosts systems connected to it. His machine was a Digital Equipment Corporation KA10 (PDP-10) with 64K (36-bit) words of (real magnetic) core memory, which is known today as a ‘calculator’.
How times have changed!