The addition of 3D Touch to the iPhone 6s has been a productivity boon for a lot of users, with information now more quickly accessible from the home screen and within key apps, and iOS 10 improved upon this by putting widgets directly behind key icons on the home screen, and expanding the menus. While most of these popup menus remain static, there are some minor things that can be customized in certain apps. In the iOS 10 Mail app, for example, if…
