We've optimized our app on your foldable devices and your tablets with the side-by-side views to take advantage of the larger screens.
You can view a list (i.e. your inbox, your agenda of events) on the left alongside a detailed view (an email or event) on the right.
In landscape view, you can also see Outlook in three-pane layout with the list of folders, list of emails, then the selected email - all in one view.