If you need to send out email messages using an email address with your very own domain name, make sure that the company will provide you with usage of their SMTP server. The latter is the software system which allows e-mails to be transmitted. SMTP is an acronym for Simple Mail Transfer Protocol and it handles all outgoing emails from apps, webmail and contact forms. When a message is sent, the SMTP server confirms with the DNS servers throughout the world where the e-mails for the receiving domain are handled and once it obtains this data, it creates a connection to the remote POP/IMAP server to see if the recipient mail box is available. In case it does, the SMTP server delivers the message body and then the receiving server delivers it to the mail box where the recipient can open it and see it. Without having a SMTP server on your end, you will not be allowed to send emails at all.