If you need to send out e-mails through an email address with your personal domain, you have to make sure that the company will give you access to their SMTP server. The aforementioned is the software system which allows e-mail messages to be sent out. SMTP is an acronym for Simple Mail Transfer Protocol and it handles all outbound e-mails from applications, webmail and contact forms. When a message is sent, the SMTP server confirms with all the DNS servers throughout the world where the emails for the receiving domain are managed and as soon as it obtains this info, it will connect into the remote POP/IMAP server to see if the recipient mailbox is out there. When it does, the SMTP server transmits the email body and then the receiving server delivers it to the mail box in which the recipient can open it and see it. With no SMTP server on your end, you will not be able to send out messages in any way.