After you add your custom domain, get Office 365 email in Outlook

After you add a custom domain for your organization (like, you can send and receive email with the domain (like right in the Office 365 portal. Sign in to the portal, and click Outlook.

But if you also want to use Office 365 email with your custom domain in your Outlook program on your desktop, you and others in your organization can do that too. Follow the steps to set up Office 365 email with your custom domain in Outlook 2010 or Outlook 2013.

 Tip    You can also set up Outlook to work with your original email address, if you don’t have a custom domain or you’re just trying out the service.

Before you set it up, make sure your Office 365 email is working in the portal

For Office 365 email on your custom domain to work with Outlook on your desktop, email first has to work correctly in the service. If you can’t send and receive email in the Office 365 portal, check for these possible issues. After email works in the portal, try again to set up Outlook with your custom email address.

  • If you’re using a Small Business plan and you chose to have Office 365 manage your DNS records:    When you added your custom domain, did you finish all the steps in the wizard, including completing the process to change your name server (NS) records to Office 365? That final step allows Office 365 to set up email with your domain for you.
  • If you’re managing your own DNS records:    Did you set up the MX and CNAME records for Exchange Online at your DNS hosting provider? They’re required for email to work. You also need to create those records if you’re using a Small Business plan and you skipped the last wizard step. (Learn how to set up the email records at many popular domain registrars.)
  • If you’re having trouble getting email to work in the portal:    If Office 365 email doesn’t work in the portal, it probably won’t work in Outlook on your desktop either. Track down the Office 365 issues first (see the steps in the Troubleshoot problems section below), and then set up Outlook with your Office 365 email address.

Troubleshoot problems

  • Follow step-by-step instructions to set up email accounts in different versions of Outlook. You can use Outlook 2013, 2010, or 2007 with Office 365.
  • Email connectivity issues? Try these tips for tracking down the problem.
  • If these steps don’t help in your situation, try posting a question in the Office 365 Community. They’re a great resource, including Microsoft support agents who can help if you’re still stuck.
Applies to:
Office 365 Enterprise admin, Office 365 Midsize Business admin, Office 365 Small Business admin