Please delete my email address

To stop using the old MSN email address, either remove it from apps/devices or remove it as an alias from the Microsoft account, depending on the scenario.

1. To remove the MSN account from Mail and Calendar on Windows 10
   1. Open the Mail or Calendar app.
   2. Select Settings in the lower-left corner (on a phone/tablet, select More first).
   3. Select Manage Accounts.
   4. Select the old MSN account.
   5. Select Delete account.
   This removes the account from the Mail and Calendar apps only; the email account itself remains available via other clients or the web.
2. To remove the MSN address as a sign-in alias from the Microsoft account
   1. Go to Manage how you sign in to your account (account alias management page).
   2. Sign in if prompted.
   3. Next to the old MSN email alias, select Remove.
   Important points from the alias management rules:
   • If the MSN address is an alias from a Microsoft domain (such as @msn.com), removing it permanently deletes that alias and it cannot be associated with any Microsoft account again.
   • If it is currently the primary alias, a different primary alias must be chosen before it can be removed.

If the goal is to completely close the Outlook.com/MSN mailbox and associated Microsoft account, follow the Microsoft account closure process, which permanently deletes email and contacts and also removes access to other Microsoft services tied to that account.

References:

• Delete an email account from Mail and Calendar apps
• Add or remove an email alias in Outlook.com
• Close your Outlook.com account