In order for you to send out emails through an e-mail address with your personal domain name, make sure that the provider will provide you with usage of their SMTP server. The aforementioned is the software system which permits e-mails to be dispatched. SMTP is an abbreviation for Simple Mail Transfer Protocol and it addresses all outbound e-mails from programs, webmail and contact forms. When a message is sent out, the SMTP server confirms with all the DNS servers throughout the world where the emails for the receiving domain name are handled and once it acquires this info, it will connect into the remote POP/IMAP server to check if the recipient mail box is available. When it does, the SMTP server sends the message body and so the receiving server delivers it to the mail box where the recipient can open it up and read it. Without an SMTP server on your server, you won't be able to mail out emails at all.