In order for you to send e-mails using an e-mail address with your very own domain, you have to make sure that the company will provide you with access to their SMTP server. The aforementioned is the software which enables e-mails to be sent out. SMTP is an abbreviation for Simple Mail Transfer Protocol and it addresses all outbound e-mails from apps, webmail and contact forms. When a message is sent out, the SMTP server confirms with all the DNS servers around the world where the emails for the receiving domain are taken care of and when it acquires this data, it creates a connection into the remote POP/IMAP server to see if the recipient mail box is out there. If it does, the SMTP server directs the e-mail body and then the receiving server sends it to the mail box where the recipient can open it and see it. Without an SMTP server on your end, you won't be able to mail out e-mails in any way.
