The PatPat mailing list is a great way to learn about new deals but, since you can also find all the coupons on AppGrooves, you may wish to unsubscribe from it. All you need to do is either open one of the emails and click on the Unsubscribe button at the bottom of the page. Alternatively, you can open the app and tweak the settings there. Bear in mind that it may take up to a week for the change to take effect. If you wish to subscribe to the newsletter again, simply head to the front page and you'll be able to get that sorted in a matter of seconds.