How do I add a domain to Office 365?
This FAQ will help you to add a domain name to your Office 365 package.
From your Office 365 control panel, click on the domains tab in the top right hand corner. This will show you each domain you have in the package. From here, click the Add Domain button at the bottom of the page.
Now you can choose which domain name you want to use. Select either Use a domain from your account; use a domain from another source; or Use a new domain. Once you have made your selection, click on the Add button.
We will now verify your domain name. This communicates with Microsoft that this is the domain name that you would like to use for Office 365.
Once your domain name is verified, you can go on to add users and begin using Office 365.