If you want to send e-mail messages using an email address with your personal domain name, make sure that the provider will provide you with usage of their SMTP server. The latter is the software that enables email messages to be dispatched. SMTP is an abbreviation for Simple Mail Transfer Protocol and it addresses all outgoing emails from applications, webmail and contact web forms. Every time a message is sent out, the SMTP server confirms with the DNS servers around the world where the emails for the receiving domain are handled and when it obtains this info, it will connect to the remote POP/IMAP server to check if the recipient mail box is out there. If it does, the SMTP server transmits the message body while the receiving server sends it to the mailbox where the recipient can open it and see it. With no SMTP server on your end, you will not be capable to send out e-mails at all.