Adding a new email address to my account

You can add up to 10 email address to your Microsoft account just change your primary email to you new one I did this few months ago you won't lose anything.

This link should help

https://support.microsoft.com/en-gb/help/12407/microsoft-account-change-email-phone-number

Thanks for the reply, I tried adding my new account to my old xbox account that but it says "This email is part of a reserved domain. Please enter a different email address."

As an update, I re-added the old email and was able to sign in using my new password, but now I can't re-change my alias to the new email address. Will my Xbox Live account ever recognize a change in the primary email associated with the account?

Hello, Joep92. Thanks for reaching out! My name is Lucas, and I'm an Independent Advisor and a Microsoft user just like you. I'll be happy to assist you today.

You can change the email address of your Microsoft Account by adding an alias email to your account (a second email address to it), and then making this second email address the primary email for your Microsoft Account. Then, you can remove your gmail email address and use it on another account.

To create another email to be used as an alias on your Microsoft Account, please follow these steps:

Sign in to: https://go.microsoft.com/fwlink/?LinkId=529489

Under the Account Aliases section, select Add Email.

Choose Create a new email address and add it as an alias, and then follow the instructions.

After you've added the email address, verify it by clicking on the link that you'll receive on your inbox.

After that, on your account page, make this new email address your primary email address and remove your gmail from the account. It should get available to be added to the account your mom made for you. Just add it as an alias email address to the account following the steps above.

If you still have any question, please let me know.

First, add your new Microsoft email address by signing in to https://account.microsoft.com/profile.

Once you have added the email address, set it as the new primary email address. After that don’t make any changes with the previous Microsoft email address, it will be set as secondary email on your account.

The detailed steps can be found on the link as well.