When you've got a cloud hosting account and you create an e-mail address, you may take the option to send and receive emails for granted, but in fact, this is not always true. Sending emails isn't necessarily part of the hosting packages that service providers feature and an SMTP service is required to be able to do that. The acronym signifies Simple Mail Transfer Protocol and that is the set of scripts that allows you to send out email messages. If you use an email application, it connects to the SMTP server. The latter then searches the DNS data of the domain, that is a part of the receiving address to find out what email server manages its emails. After some system information is interchanged, your SMTP server provides the e-mail to the remote IMAP or POP server and then the e-mail is finally delivered in the matching mailbox. An SMTP server is needed if you are using some kind of contact page as well, so in case you work with a cost-free hosting plan, for instance, it's probable that you won't have the ability to use such a form as most free of charge website hosting service providers do not allow outgoing email messages.