If you'd like to send e-mail messages using an email address with your personal domain name, make sure that the provider will give you usage of their SMTP server. The latter is the software enabling email messages to be transmitted. SMTP is an acronym for Simple Mail Transfer Protocol and it handles all outbound e-mails from apps, webmail and contact web forms. When a message is sent, the SMTP server confirms with the DNS servers around the world where the e-mails for the receiving domain name are taken care of and once it obtains this data, it will connect to the remote POP/IMAP server to see if the recipient mailbox exists. In case it does, the SMTP server sends the e-mail body and so the receiving server sends it to the mail box in which the recipient can open it up and see it. With no SMTP server on your end, you won't be allowed to send emails in any way.