Definition of email
E-mail is a service used to send and receive messages quickly and securely through an electronic or computer channel. In computing, email is a network service that allows two or more users to communicate with one another by messages that are sent and received through a computer or similar device. Email is one of the most used features of the Internet, which helps communications to be fast, reliable and accurate.
The email answers to a letter model. This way, it contains the sender, recipient, subject, message, and also is able to attach files as text documents or images. To send an email it only takes one computer (or other device) with Internet connection and software such as Outlook Express or Gmail to send and receive emails. The user must have an email address and a mail provider.
This makes distance communication around the world much faster, easier and cheaper to do it by other systems such as old letters today.
This type of technology is based on SMTP protocols, but can also apply to other systems and technologies.
Besides being easier and faster, the email service has multiple possibilities, as the alternative of sending the message to blind copy recipients, filter certain types of messages or recipients, or to ship to many recipients at once.
One of the big problems they had encountered this technology is the amount of spam or junk mail that is sent and received per day. This means that an average user will probably receive much spam every day.