Setting up Mail and adding contacts
Writing and sending emails
Organising your inbox
Sweep, junk and delete
Removing an account
If you don't want to see emails from an account in the Mail app any more, you can remove the account. This doesn’t delete the original account or messages – you’ll still be able to get to them through a browser or another email app.
On Start, tap or click Mail.
Swipe in from the right edge of the screen, then tap Settings.(If you're using a mouse, point to the top-right corner of the screen, move the mouse pointer down, then click Settings.)
Tap or click Accounts.
Tap or click the account you want to remove.
At the bottom, tap or click Remove account or Remove all accounts.
Removing your Microsoft account (the account you use to sign in to Windows) is a different process. This account is required to use Mail, and removing it will remove all of your accounts from Mail, Calendar and People. To remove your Microsoft account, see How to add an account to your Microsoft account. You might want to stop downloading messages for your Microsoft account instead.
Tap or click the account you want.
Under Download new emails, tap or click Manual.