Computer-based mail messaging became possible as sharing and exchange of documents on computers became exceedingly common in the early 1960s. In this way, the first mail systems were created.
Since this time, plenty of software developers started developing mail applications but that looked incompatible. Though most of them referred to ARPANET which was created in the 1960s as a way of documents and file exchange.
Among those scientists racing to have the software, Ray Tomlinson in 1971 developed a system for sending messages between computers that used the @ symbol to identify the address. His system got popular in the following days.
In the next year, Larry Roberts who was working for ARPANET wrote the first email management program that develops the ability to list, select, forward and respond to messages.
After a couple of years in 1996, Microsoft released an internet mail and news 1.0 feature of the third internet explorer which is currently known as outlook and in the next year, more than 10 million users worldwide had free web mail accounts.
In the next few years, more things kept evolving, email was able to be used on wireless, and Gmail came up and topped out webmail until it is as known today.