If you need to send out emails through an email address with your own domain name, make sure that the company will provide you with access to their SMTP server. The aforementioned is the software system that allows emails to be dispatched. SMTP is an abbreviation for Simple Mail Transfer Protocol and it manages all outbound email messages from applications, webmail and contact web forms. Every time a message is sent, the SMTP server confirms with all the DNS servers worldwide where the emails for the receiving domain name are taken care of and once it obtains this information, it will connect to the remote POP/IMAP server to see if the recipient mailbox is out there. If it does, the SMTP server transmits the message body and so the receiving server sends it to the mailbox in which the recipient can open it up and read it. Without an SMTP server on your server, you won't be able to mail out emails at all.