I use this app a lot for work on my iPad and as an email client it's fine, works well if you're in the Office365 ecosystem. The features are still pretty basic however (no ability to change the font or font color!).BUT A HUGE PROBLEM is multitasking, especially on the iPad, where you want to quickly switch to other apps for reference while typing an email. The apps reloads all the time when switching to another app. If you are in the middle of writing an email, go to the home screen and back, your email is now closed and saved as a draft? No other email client on iOS does this. How can Microsoft ship such a badly optimized app? Shame on their iOS team frankly. They won't see me back until this is fixed!