If you would like to send out emails through an e-mail address with your own domain, make sure that the provider will give you usage of their SMTP server. The latter is the software enabling email messages to be transmitted. SMTP is an acronym for Simple Mail Transfer Protocol and it manages all outgoing email messages from applications, webmail and contact forms. When a message is sent, the SMTP server confirms with the DNS servers globally where the e-mails for the receiving domain are managed and as soon as it gets this data, it creates a connection to the remote POP/IMAP server to see if the recipient mail box is out there. If it does, the SMTP server directs the e-mail body while the receiving server delivers it to the mailbox in which the recipient can open it and read it. Without having a SMTP server on your server, you will not be capable to mail out e-mails at all.