Electronic mail (also known as email or e-mail) is one of the most commonly used services on the Internet, allowing people to send messages to one or more recipients. Email was invented by Ray Tomlinson in 1972.
The operating principle behind email is relatively simple, which has quickly made it the most popular service used on the Internet.
As with a traditional postal service, for your message to reach your recipient, all you need to know is their address. Its two main advantages over "paper mail" are the speed at which the email is sent (practically instantaneous) and the lower cost (included with the cost of an Internet connection).
What's more, email can be used to instantaneously send a message to several people at once.
Email addresses (both for senders and recipients) are two strings separated by the character "@" (the "at sign"):
user@domainThe right-hand part describes the domain name involved, and the left-hand part refers to the user who belongs to that domain. One or more mail servers (MX records in the Domain Name System) correspond to each domain.
An email address can be up to 255 characters long and can include the following characters:
In practice, an email address often looks something like this:
firstname.lastname@provider.domain
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