Question: I want to use my own domain with my Microsoft 365 Family plan, but there is no way I am transferring it to GoDaddy. Is there way way around this “requirement” or am I stuck?

Answer: 
This is described in the article
[Get a personalized email address in Microsoft 365](https://support.microsoft.com/en-us/office/get-a-personalized-email-address-in-microsoft-365-75416a58-b225-4c02-8c07-8979403b427b?ui=en-us&rs=en-us&ad=us):

> 
> **Q:** I already own a domain that's registered with a provider other than GoDaddy. Can I set up a personalized email address in
> Outlook.com?
> 
> 
> **A:** At the moment, we only support connecting domains managed by GoDaddy with Outlook.com.
> 
> 
> 

When entering my Premium subscription, I can see the following in Manage my subscription:

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[![enter image description here](https://i.stack.imgur.com/Wqk5Y.jpg)](https://i.stack.imgur.com/Wqk5Y.jpg)

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The answer is then : Not possible at the moment.
I have no information if this will change in the future.
Not according to Microsoft.

In their FAQ for personal and family subscriptions ([Get a personalised address in Microsoft 365](https://support.microsoft.com/en-us/office/get-a-personalized-email-address-in-microsoft-365-75416a58-b225-4c02-8c07-8979403b427b)) is this question:

> 
> I already own a domain that's registered with a provider other than GoDaddy. Can I set up a personalized email address in Outlook.com?
> 
> 
> 

Their answer is:

> 
> At the moment, we only support connecting domains managed by GoDaddy with Outlook.com
> 
> 
> 

Business and enterprise plans allow other registrars - see this MS doc [Buy a domain name](https://docs.microsoft.com/en-us/microsoft-365/admin/get-help-with-domains/buy-a-domain-name?view=o365-worldwide)