If you'd like to send email messages through an e-mail address with your personal domain, make sure that the company will provide you with access to their SMTP server. The aforementioned is the software system which allows e-mail messages to be sent out. SMTP is an abbreviation for Simple Mail Transfer Protocol and it handles all outgoing email messages from apps, webmail and contact forms. Whenever a message is sent, the SMTP server checks with all the DNS servers globally where the e-mails for the receiving domain name are handled and once it obtains this information, it will connect into the remote POP/IMAP server to check if the recipient mailbox is out there. When it does, the SMTP server directs the email body and the receiving server sends it to the mail box in which the recipient can open it and read it. Without having a SMTP server on your end, you won't be capable to send emails in any way.