If you want to send emails through an e-mail address with your very own domain, make sure that the provider will provide you with access to their SMTP server. The aforementioned is the software system which permits e-mails to be transmitted. SMTP is an abbreviation for Simple Mail Transfer Protocol and it deals with all outbound e-mails from apps, webmail and contact forms. Whenever a message is sent out, the SMTP server confirms with all of the DNS servers globally where the e-mails for the receiving domain name are managed and once it acquires this information, it creates a connection to the remote POP/IMAP server to find out if the recipient mail box is out there. In case it does, the SMTP server sends the message body and then the receiving server delivers it to the mailbox where the recipient can open it up and see it. Without having a SMTP server on your end, you will not be allowed to send e-mails in any way.