What about using Office or Outlook apps on our mobile devices? Do I have to use the stock Apple or Android apps for mail, contacts, and calendars?

We recommend using the stock Apple, Android, Windows apps for email, cal, and contacts that come with your phone. However, if there’s a 3rd party app you’re in love with or want to experiment with, let us know how it goes. We’d love to get your feedback but if in doubt, just keep to the basic apps that came with your phone, which should work fine.