Ray Tomlinson

Raymond Samuel Tomlinson (April 23, 1941 – March 5, 2016) was an American programmer. He created the first email system on the ARPANET system in 1971. He used the @ sign to separate the user from their machine, which has been used in email addresses ever since. He was added into the Internet Hall of Fame. He was born in Amsterdam, New York.
Tomlinson died of a heart attack in Lincoln, Massachusetts. He was aged 74.