Office 365 - Change your default email domain

Office 365 - Change your default email domain

After you set up your custom domain in Office 365 (like mycompany.ca, for example), you can change the default domain that appears for new email addresses when you Add users.

To change the default domain:

1. Go to your organization’s Office 365 profile:
2. Go to Admin => Office 365
3. In the upper right, click your organization’s name

 

1. Click Edit.
2. Choose a new default domain from the list of domains, and then save your changes.

http://office.microsoft.com/en-ca/office365-suite-help/change-your-default-domain-HA102818532.aspx