1,764 votesBarry Cook commented
To not to be able to customize the Ribbon or Quick Bar in Outlook 365 is counter-productive. Features I do not use often enough are stuck there, while any Add-Ons I might consider I simply won't do - simply adds to the clutter.
Goodness knows the Ribbon in other Office apps is a cluttered mess too, but at least I can put items in the Quick Bar and - for the most part - Hide the Ribbon. No such luck here.
May consider going back to Mac Mail / Contacts / Calendar instead.