
The first email was sent between two machines that were literally side-by-side using a program that Tomlinson developed called SNDMSG. Tomlinson chose the user@host addressing format that remains in use today.

The first email was sent between two machines that were literally side-by-side using a program that Tomlinson developed called SNDMSG. Tomlinson chose the user@host addressing format that remains in use today.