World’s first email message was sent in 1971 between two computers. Mr. Tomlinson was the person, who created a computer program named SNDMSG, which sent a simple email message to a nearby computer through ARPANET. He was also the first person to put “@” in the email. He did that because this sign wasn’t used that much anywhere else. The first email address was “tomlinson@bbn-tenexa.” BBN was the name of Mr. Tomlinson’s employer and “tenexa” was the name of the operating system that was used. What exactly was the first email message is lost. However, let’s see how exactly the first computers used for email message purposes looked like.