The first email

"The first e-mail, by most accounts, was sent in 1965 at the Massachusetts Institute of Technology between users of the Compatible Timesharing System (CTSS) mainframe. CTSS users could post messages to each other, so that whenever the receiving user logged onto the mainframe, the message was waiting. (Actually, the new message was simply appended to a running message file, and each user got one, long, constantly updated message logfile.)." - Source: TechRepublic Geekend