In order for you to send out e-mails through an e-mail address with your personal domain name, make sure that the company will provide you with usage of their SMTP server. The aforementioned is the software system allowing e-mails to be sent. SMTP is an acronym for Simple Mail Transfer Protocol and it manages all outbound email messages from programs, webmail and contact web forms. When a message is sent out, the SMTP server confirms with all the DNS servers throughout the world where the e-mails for the receiving domain name are taken care of and when it gets this information, it creates a connection into the remote POP/IMAP server to check if the recipient mail box is available. If it does, the SMTP server sends the email body and so the receiving server delivers it to the mail box where the recipient can open it and see it. Without an SMTP server on your end, you will not be allowed to send out e-mails at all.