If you have a cloud hosting account and you create an email address, you may take the option to send out and receive messages for granted, but in fact, this isn't always the case. Sending emails is not necessarily part of the hosting packages that companies feature and an SMTP service is required to be able to do that. The abbreviation means Simple Mail Transfer Protocol and this is the set of scripts that enables you to send out email messages. If you use an email program, it connects to the SMTP server. The latter then requests the DNS data of the domain name, which is a part of the receiving address to find out which email server manages its e-mails. After system data is interchanged, your SMTP server provides the email to the remote IMAP or POP server and then the email is finally delivered in the matching mailbox. An SMTP server is needed if you use some sort of contact page also, so in case you work with a cost-free hosting package, for instance, it is very likely that you won't be able to make use of such a form as many free web hosting companies do not allow outgoing e-mails.