If you want to send emails using an e-mail address with your domain, make sure that the provider will give you access to their SMTP server. The aforementioned is the software system that enables e-mail messages to be transmitted. SMTP is an acronym for Simple Mail Transfer Protocol and it manages all outbound e-mails from apps, webmail and contact web forms. Whenever a message is sent out, the SMTP server confirms with the DNS servers globally where the e-mails for the receiving domain are taken care of and as soon as it gets this data, it creates a connection into the remote POP/IMAP server to see if the recipient mail box is out there. When it does, the SMTP server transmits the message body while the receiving server delivers it to the mailbox in which the recipient can open it and see it. Without an SMTP server on your server, you won't be able to mail out messages at all.