In order for you to send out emails using an e-mail address with your domain, you have to make sure that the provider will provide you with usage of their SMTP server. The aforementioned is the software enabling e-mail messages to be sent out. SMTP is an acronym for Simple Mail Transfer Protocol and it manages all outgoing e-mails from applications, webmail and contact web forms. When a message is sent, the SMTP server confirms with all of the DNS servers worldwide where the emails for the receiving domain name are handled and when it acquires this data, it creates a connection to the remote POP/IMAP server to see if the recipient mailbox exists. In case it does, the SMTP server transmits the message body while the receiving server delivers 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 out messages in any way.