Best mail client for Android The design of the app looks somewhat old-fashioned and the configuration menu structure is more complicated than I would like it to be  but all things considered this is by far the best email client available for Android. I've tried Gmail  and liked it too  but unfortunately that app cannot send plain text messages! Can you believe it? K9 won't give you that kind of trouble. Also  I believe it's the only email client for Android that supports IMAP IDLE .
March 10 2016