TypeApp - TypeApp - The best Android and iOS email app ever created for mobile devices. Fast, simple and easy, TypeApp is the best email app for Android and iOS
Acompli - iPhone email just got a promotion
myMail - myMail is the smart email app for managing all your accounts on iOS and Android.
Send - Instant messaging meets email (by Microsoft)
Brosix Instant Messenger - Secure instant messenger for your team
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!