If you would like to send out emails using an e-mail address with your own domain, make sure that the provider will give you access to their SMTP server. The aforementioned is the software allowing emails to be sent out. SMTP is an acronym for Simple Mail Transfer Protocol and it manages all outbound e-mails from programs, webmail and contact web forms. Every time a message is sent, the SMTP server checks with all of the DNS servers globally where the e-mails for the receiving domain name are managed and as soon as it acquires this info, it creates a connection to the remote POP/IMAP server to see if the recipient mail box exists. If it does, the SMTP server directs the e-mail body and the receiving server sends it to the mailbox in which the recipient can open it up and see it. With no SMTP server on your end, you will not be capable to send messages in any way.