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You're referring to the inventor of email!

The invention of email is a bit of a complex story, as it involved the contributions of several individuals over time. However, the most commonly credited inventor of email is Ray Tomlinson, an American computer programmer and engineer.

In 1971, Tomlinson was working on a project for the United States Department of Defense's Advanced Research Projects Agency (ARPA), which was developing a network called ARPANET. Tomlinson was tasked with finding a way to send messages between different computer systems on the network.

At the time, email was not a new concept, but it was typically sent using a system called SNDMSG, which was part of the CTSS (Compatible Time-Sharing System) operating system. However, this system was not designed for use on ARPANET, and it was not suitable for sending messages between different computer systems.

Tomlinson decided to create a new system that would allow users to send messages to each other using a simple command-line interface. He wrote a program called SNDMSG, which allowed users to send messages to each other using a simple syntax, such as "TO: recipient" and "FROM: sender".

Tomlinson also introduced the "@" symbol to separate the user name from the host name in an email address, which is still used today. For example, "[email protected]" would be written as "[email protected]" in Tomlinson's original system.

Tomlinson's email system was first used on ARPANET in 1971, and it quickly became popular among the network's users. Over time, email evolved to include features such as attachments, folders, and spam filters, but Tomlinson's basic concept of sending messages between different computer systems remains the foundation of modern email.

So, while there were likely other individuals who contributed to the development of email, Ray Tomlinson is widely credited with inventing the modern email system that we use today.