2 365 account 3 mail addresses

Question

2 365 account 3 mail addresses

Tom Coady 0

Firstly my mistake, I created a family account assuming it offered sharepoint, then closed it but this won't happen until August.

Second I created a 365 business with the same mail address but it insisted on giving me a @onmicrosoftonline.com address before guiding me on changing DNS settings.

Now when I open Outlook it shows only my onmicrosoftonline.com address instead of the one I signed up with and changed the DNS to work with.

Hopefully just a question of adding this as another address?

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1 answer

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Answer 1

Vergil-V 15,775 Microsoft External Staff Moderator

Hi Tom Coady

After adding the customer domain in the Microsoft 365 Admin Center, you can change your account to use the customer's domain by following the steps below.

Step 1: Verify that the customer domain has been added successfully and that its status is listed as Healthy by navigating to the Domains page in the Microsoft 365 Admin Center: https://admin.cloud.microsoft/#/Domains

User's image

Step 2: Follow the remaining steps shown in the image below to update the username and email address associated with your account.

Reference: Change a user name and email address - Microsoft 365 admin | Microsoft Learn

Once the change has been completed, your account should appear with the customer domain.

I hope this helps provide some additional insight. If you have any further questions, please feel free to reach out.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Tom Coady 0 Reputation points

2026-07-02T11:44:32.3533333+00:00

Very helpful, thanks so much!
Vergil-V 15,775 Reputation points Microsoft External Staff Moderator

2026-07-02T13:01:22.23+00:00

Hi Tom Coady
I’m happy to hear that my support was helpful.

If you have any further questions, please feel free to reach out to the forum.