Person

Ray Tomlinson

Ray Tomlinson was an American computer engineer who adapted existing messaging and file-transfer programs to send mail between computers on ARPANET.

Period
1941–2016
Known for
Network email and the @ addressing convention
Historical contribution

What Tomlinson contributed

In 1971 he combined local mailbox software with an ARPANET transfer mechanism and used @ to separate a user name from the host computer.

Why it mattered

Network email quickly became one of the most heavily used forms of computer-mediated communication and helped make networks valuable for person-to-person exchange.

Connected topics

Where this fits in ITEM

Evidence

Sources and further reading

  1. Email creator Ray Tomlinson inducted into Internet Hall of Fame, 2012

    Raytheon BBN Technologies · 2012

    Open source ↗

  2. CTSS Documents and CTSS Programmer’s Guide materials

    MIT CSAIL

    Open source ↗