Use Mail in iOS 9
So far, the bulk of this book has been about El Capitan Mail. Although I’ve mentioned iOS 9 Mail from time to time (and some of the things I’ve discussed apply equally to both platforms), Mail in iOS 9 has enough unique characteristics that it deserves its own chapter. As was the case for El Capitan Mail, I’m not going to cover every feature here. Instead, I want to point out the most important things you need to understand in order to use iOS 9 Mail effectively—especially aspects of Mail that are unclear, obscure, or otherwise confusing.