To upgrade your free email service to our Business email service :
Please login to your account at : https://www.sibername.com/account/login.php
Click on Domains under your Client ID section
Click on the domain name you want this service upgraded
Scroll down to Business email and click on Order now.
You can also email us on firstname.lastname@example.org with your upgrade request and we should be able to assist you with that as well.