On your home screen, tap on the Settings icon. This is the icon that shows an image of a gear. You will be brought to the Settings menu.;
, Scroll down the Settings menu until you come across the “Mail” button. Tap it.
 If you are using Gmail, you will see a “Gmail” button there. If you are using Yahoo, you will see a “Yahoo” button instead.
 By tapping on this button, you will be logged out of your e-mail account on your iPod.
Tap on Settings.
Tap on “Mail” on the Settings menu.
Tap on the e-mail service provider under the Account section.
Tap “Delete Account” at the bottom of the screen.
{"src": "wikihow-all_validation", "title": "How to Log Out of Mail on iPod"}