If you need 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 system which enables emails to be sent out. SMTP is an abbreviation for Simple Mail Transfer Protocol and it handles all outbound e-mails from apps, webmail and contact forms. When a message is sent out, the SMTP server checks with all the DNS servers worldwide where the e-mails for the receiving domain name are managed and as soon as it obtains this information, it creates a connection into the remote POP/IMAP server to see if the recipient mailbox is available. If it does, the SMTP server delivers the e-mail body and so the receiving server sends it to the mail box in which the recipient can open it and see it. With no SMTP server on your server, you won't be allowed to send messages in any way.