If you need to send out emails 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 aforementioned is the software system that enables emails to be dispatched. SMTP is an abbreviation for Simple Mail Transfer Protocol and it handles all outgoing email messages from apps, webmail and contact web forms. When a message is sent out, the SMTP server checks with the DNS servers worldwide where the emails for the receiving domain are taken care of and when it gets this info, it creates a connection to the remote POP/IMAP server to check if the recipient mailbox exists. When it does, the SMTP server delivers the e-mail body and the receiving server sends it to the mail box in which the recipient can open it up and read it. Without an SMTP server on your server, you will not be capable to send messages in any way.