If you would like to send e-mail messages using an email address with your own domain, you have to make sure that the provider will provide you with access to their SMTP server. The aforementioned is the software which allows e-mails to be transmitted. SMTP is an abbreviation for Simple Mail Transfer Protocol and it manages all outgoing email messages from applications, webmail and contact forms. Whenever a message is sent, the SMTP server confirms with all of the DNS servers globally where the e-mails for the receiving domain name are managed and when it obtains this info, it will connect to the remote POP/IMAP server to find out if the recipient mailbox is available. In case it does, the SMTP server directs the e-mail body while the receiving server sends it to the mail box in which the recipient can open it up and see it. Without an SMTP server on your server, you will not be able to send e-mails in any way.