I can't imagine there is a good business, that communicates effectively, that is room in Microsoft Outlook.
I never appreciated Google's productivity software until I was forced to use Microsoft's at a large company. People just openly accept this broken system and the fact that they'll miss important communications and spend far too much time accounting for the SW's shortcomings.
FUCK Microsoft Outlook. The executives making decisions for the team's designing and maintaining that product are committing crimes against humanity.