Apple's Mail is a great place to start trying out iOS's time-saving 3D Touch interactions on your iPhone. With 3D Touch, not only can you create a new email and jump to your inboxes right from the Home screen but manage your emails more efficiently with in-app Peek and Pop gestures.
In this tutorial, you will learn about all the ways Mail takes advantage of 3D Touch to make you more productive by letting you preview emails, contacts, web links, as well as embedded dates and times, airline codes, package tracking numbers and more.