If you have a shared web hosting account and you create an e-mail address, you may consider the option to send and receive emails for granted, however, that isn't always the case. Sending email messages isn't necessarily part of the hosting packages that companies offer and an SMTP service is necessary to be capable to do that. The abbreviation stands for Simple Mail Transfer Protocol and this is the piece of software that permits you to send out e-mails. If you use an email app, it creates a connection to the SMTP server. The latter then queries the DNS records of the domain name, which is a part of the receiving address to find out which email server handles its e-mails. After some system data is exchanged, your SMTP server delivers 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 required if you are using some sort of contact page form too, so in case you work with a free of charge hosting plan, for example, it's probable that you will not have the ability to make use of this type of form as most cost-free website hosting service providers do not allow outgoing e-mail messages.