If you wish to send out e-mail messages using an email address with your very own domain name, you have to make sure that the provider will provide you with access to their SMTP server. The latter is the software which permits email messages to be sent. SMTP is an abbreviation for Simple Mail Transfer Protocol and it deals with all outgoing e-mails from applications, webmail and contact web forms. Every time a message is sent, the SMTP server checks with all of the DNS servers around the world where the e-mails for the receiving domain name are handled and as soon as it acquires this information, it creates a connection to the remote POP/IMAP server to see if the recipient mailbox is available. When it does, the SMTP server directs the message body and the receiving server delivers it to the mail box in which the recipient can open it up and see it. With no SMTP server on your server, you will not be capable to mail out messages at all.