These instructions will guide you through removing an Exchange mailbox from your Mail app on an iPhone/iPad that is running IOS version 14 or later:
- From the home screen tap the settings icon.
- Scroll down and tap Mail.
- Then, tap Accounts.
- Tap the account you want to remove.
- Scroll down to the bottom of the page, and then tap Delete Account.
- You’ll then be asked to confirm, please then tap Delete from My iPhone.