add my domain

Christopher Cozzi 20 Reputation points
2026-01-08T16:10:42.3633333+00:00

Is there asimpole way to add my domain name so I don't have to use the longer alias that includes .onmicrosft. in the alias?

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

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Answer accepted by question author
Anonymous
2026-01-09T00:40:49.9933333+00:00

Hi @Christopher Cozzi 

Thank you for posting your question in the Microsoft Q&A forum. 

You can absolutely set up a custom domain in Microsoft 365 so that your email addresses use your own domain instead of the default yourdomain.onmicrosoft.com. 

Please note that adding, modifying, or removing domains requires Global Administrator or Domain Name Administrator permissions. These changes apply to the entire tenant, so regular users cannot perform them. 

To add a custom domain: 

-Sign in at https://admin.microsoft.com with your admin credentials 

-Follow the guided steps (or watch the video) in this official article: Add a domain to Microsoft 365 - Microsoft 365 admin | Microsoft Learn. 

After you verify your domain (Microsoft recommends using a TXT record for this step), update the required DNS records as instructed and assign the new domain to users or set it as the default for new accounts, as mentioned in the article Add DNS records to connect your domain - Microsoft 365 admin | Microsoft Learn.

Domain setup can feel technical, but the admin center walks you through it step by step, and the linked guide is very straightforward. Once completed, you’ll be able to use your own domain across Microsoft 365 services, giving your organization a more professional and consistent identity. 

I hope this makes the process clearer and easier for you. 


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  1. AI answer

    2026-01-08T16:10:48.93+00:00

    To add your domain name and avoid using the longer alias that includes .onmicrosoft.com, you can follow these steps in the Microsoft 365 admin center:

    1. Go to Setup.
    2. Select Get your custom domain set up, then click Get Started > Add domain.
    3. Enter the new domain name you want to add and select Next.
    4. Sign in to your domain registrar and select Next.
    5. Choose the services for your new domain.
    6. Select Next > Authorize > Next, and then Finish. Your new domain will be added.

    This will allow you to use your custom domain instead of the default .onmicrosoft.com domain for your email addresses.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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