Ray Tomlinson Sends the First Email and Introduces the “@” Symbol

In 1971, computer engineer Ray Tomlinson sent the first networked email and introduced the “@” symbol to separate user names from host computers, a format that remains standard in email addresses today.At the time, Tomlinson was working at Bolt, Beranek and Newman (BBN), a contractor for the U.S. Department of Defense’s ARPANET project. ARPANET, funded by the Advanced Research Projects Agency (ARPA), connected research institutions and universities across the United States using packet-switching technology. Before 1971, users could leave messages for others on the same computer through local programs, but there was no method for sending messages between computers on the network. Tomlinson adapted two existing programs—SNDMSG, which allowed users to send messages locally, and CPYNET, which transferred files between networked computers. By combining these tools, he enabled messages to be sent from one host computer to another over ARPANET. To distinguish between the user and the host machine in the address format, he selected the “@” symbol because it was rarely used in names and naturally conveyed the meaning of “at.” This innovation created the now-familiar structure: user@host. The first email message itself was reportedly a test message. Tomlinson later stated that he did not remember the exact text and described it as something insignificant, possibly a random string of characters. The transmission occurred between two computers that were physically located side by side at BBN’s offices in Cambridge, Massachusetts, but connected through ARPANET. By the mid-1970s, email had become the most widely used application on ARPANET. Its popularity contributed to the rapid growth of networked communication and influenced the development of later internet standards. The basic addressing format introduced in 1971 continues to be used globally across billions of email accounts. #EmailHistory #RayTomlinson #ARPANET #InternetHistory #Technology