I've had connection issues and app instability a bit often, especially with the iOS version. Part of it might be our email server but I'm finding issues I never have with Google or even Yahoo clients. It's not awful, but there are better and cheaper options at enterprise level.
I know it's hip to bash all things Microsoft, but Outlook is my life at work. It's absolutely fine if you're not predisposed to hating things.
I've had connection issues and app instability a bit often, especially with the iOS version. Part of it might be our email server but I'm finding issues I never have with Google or even Yahoo clients. It's not awful, but there are better and cheaper options at enterprise level.