The email (also know as e-mail, an English term derived from electronic mail) is a service that allows the exchange of messages through electronic communication systems.

The concept is used mainly to name the system that provides this service via Internet through the protocol SMTP (Simple Mail Transfer Protocol), but it also allows you to name other similar systems that use different technologies. E-mail messages make it possible to send, in addition to text, any type of digital document (images, videos, audios, etc.).


E-mail communications are common in the corporate environment.

How email works

The operation of e-mail is similar to that of post mail. Both allow you to send and receive messages, which arrive at their destination thanks to the existence of a address. E-mail also has its own mailboxes: they are the servers that temporarily save messages until the recipient reviews them.

The American Ray tomlinson was the one who incorporated the at sign (@) to the email addresses, with the intention of separating the name of the user and the server where the mailbox is hosted. The explanation is simple: @, in English, it is pronounced at and means “on”. For instance: it reads carlos at (I mean, carlos at

Structure of an email

In addition to all the above, we also have to make known what the basic structure of any email is. Thus, we find the following basic elements:

The recipient. In this box called “To”, you can include both one and several addresses of the people to whom this email will be sent. In addition, the opportunity is given that those addresses that are going to be included are not visible by the rest of the people who receive them.

Electronic mail

Emails can be sent from computers and phones.

The case. It is the section where the subject on which the email revolves should appear briefly and concisely.

The message. In this section, of great amplitude, is where the message you want to send is written. For this text to be, aesthetically speaking, as we wish, tools are offered with which to choose the font, the alignment, the color, hyperlinks and even emoticons.

Files attached to email

However, we cannot ignore that when sending an email also and in addition to the aforementioned text, and as we have previously stressed, we can incorporate various materials or files. This means that we can attach documents of various types (texts, spreadsheets, databases, pdf …) as well as photographs and even videos.

Then, whoever receives this email has different possibilities. Thus, you will not only be able to read it and reply to the issuer of it, but you will also be able to forward it to other recipients, archive it, permanently delete it, mark it, add tags and also classify it as spam.

The email service is offered under two modalities: the one known as web mail or webmail, where messages are sent and received through a specially designed web page; and service through a email client, which is a program that allows you to manage received messages and compose new ones.