How do I add a domain to Microsoft 365?

This article will help you to add a domain name to your Microsoft 365 package (formerly Office 365).

The below instructions will show you how you can set up a domain name, by either adding one you already own, using one from a different source, or registering a new domain name.

Please note: if you haven’t already done so, you’ll need to activate your Microsoft 365 package. For details on how to do this, please read the following Support article: How do I activate my Microsoft 365 package?

This article is only applicable for Microsoft 365 packages purchased before September 2023. If you purchased your Microsoft 365 plan after this date, you can select which domain to use when adding your email account. Please read the following article for further details: How do I set up a new user in Microsoft 365?

Step 2 of 5

From here, select the Domains tab in the top right-hand corner.

Select Domains tab


Step 3 of 5

Here you’ll see each domain you have in your package. From here, click the Add Domain button at the bottom of the page.

Add domain


Step 4 of 5

A pop-up window will now appear where you can choose which domain name you want to use.

Once you’ve made your selection, click Add.

Choose your domain


Step 5 of 5

If your domain name is using our nameservers, we will now verify it. This communicates with Microsoft that this is the domain name that you would like to use for your package.

Once your domain name is verified, you can go on to add users and begin using your Microsoft 365 package.

Verify domain

Please note: If you are using a domain from an alternative source, you will need to make some DNS changes through your provider’s Control Panel. If you choose to register a new domain, you will be taken to our powerful domain search tool, so that you can pick your perfect domain name.