I use this to protect my primary and shared email boxes for my small business. I only have a few email addresses so getting enterprise-grade protection for a smaller account is normally difficult.
I utilize every feature ranging from Spam Filtering & ATP to the automated encryption and archiving feature.
The best part is, I rarely have to access the portal as everything is set up and tweaked the way I wanted it. But the feature set is incredibly granular and allows for deep levels of customization.