Whenever I’ve worked at a company with Exchange/Outlook I always set up my one mail rule I can’t live without: any incoming email that doesn’t have my own email address in the To: or Cc: fields is moved into a different inbox (subfolder).
It was rare for any unaddressed stuff to matter to me, and it was certainly never urgent, so usually I gave it a quick scan once a day and mark it read.
Almost makes email tolerable.