When you have a cloud web hosting account and you set up an e-mail address, you might take the option to send and receive messages for granted, but in fact, this is not always the case. Sending e-mails is not necessarily a part of the hosting packages that providers have and an SMTP service is needed to be capable to do that. The abbreviation signifies Simple Mail Transfer Protocol and that is the software application that allows you to send out e-mail messages. If you work with an e-mail program, it creates a connection to the SMTP server. The latter then queries the DNS data of the domain, which is a part of the receiving address to find out which mail server deals with its emails. After system information is interchanged, your SMTP server provides the e-mail to the remote IMAP or POP server and then the email is finally delivered in the matching mailbox. An SMTP server is required if you use some kind of contact page form as well, so in case you have a cost-free hosting plan, as an example, it is likely that you will not be able to use such a form as many free of charge website hosting companies don't allow outgoing e-mails.