Electronic mail also known as e-mail is a service which a user can send or receive message
. It is currently the most widely used Internet application to date from its creation in 1972 by Ray Tomlinson on the Arpanet system which enabled universities to communicate to its definition by Jon Postel.
E-mail has far overcome its counterparts such as postal systems (snail mail) reducing dramatically in paper usage as a fast way of sending messages to clients, friends and family. With transport of email taking only a matter of seconds across web hosting servers world-wide. Settings can be altered to allow delays in messages etc. for security measures.
Users will gain access to one or more mailboxes which receives messages from other users across servers. The mailbox is a place where messages are stored and managed, you can also create messages to send to other emails. Mail boxes are password protected to allow security, even more measures can be taken to ensure security if required.
Messages sent to a recipient is not guaranteed as if a Simple Mail Transfer Protocol (SMTP) server fails it will not be delivered usual systems will send a non-delivery notification to let you know of the issue.
A delivery request may also be placed upon a e-mail message this allows a notification to be sent back to the user (if accepted by the email recipient). Priority can also be set on a email red flagging a message making the end reader know its a important email.
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