How do I change the email associated with my Xbox One?

If i make the new email address primary, and i delete the old one, can I still access it like normal?

Thanks for reaching out to the Microsoft Community, my name is Fernando and I'm glad I could help.

Step 1: Go to account.microsoft.com and log in to your account;
Step 2: then select the "Your information" tab;
Step 3: On the profile information screen, click "Edit Account Information";

(Note) The link being shared is in English and may require translation software to read the page content.

https://support.xbox.com/en-US/help...nt/change-email-sign-in-for-microsoft-account

Hope I helped, see you soon!

If you delete the old email, it will be completely deleted. You will not be able to ever access it again.

When you change a user's profile name or email address, they get a new profile. After receiving a new profile, users lose access to their old profile and any his information.

Btw this account is linked to an account already do I need to delete the account. (Didnt need it)