mailbox actually made email enjoyable for me. since it's demise, i tried virtually everything before discovering airmail-- which i like even better than mailbox. it has a clean and elegant interface, it's highly customizable, it directly interfaces with evernote, fantastical, 2do, trello, and many more apps, and it has a great desktop client as well. ipad support is all it's missing, and it's allegedly in the next update. can't wait...