If you wish to send email messages using an email address with your domain, make sure that the provider will provide you with usage of their SMTP server. The aforementioned is the software system allowing e-mail messages to be dispatched. SMTP is an abbreviation for Simple Mail Transfer Protocol and it addresses all outgoing emails from programs, webmail and contact forms. Every time a message is sent, the SMTP server confirms with all the DNS servers throughout the world where the emails for the receiving domain name are taken care of and when it obtains this data, it connects into the remote POP/IMAP server to check if the recipient mailbox is available. When it does, the SMTP server delivers the message body and then the receiving server delivers it to the mail box in which the recipient can open it and read it. Without having a SMTP server on your end, you won't be allowed to mail out messages at all.