For me, it's a guy named Marko Lazic who's building luccid.ai, which allows you to design your dream home. The reason why it's Marko is that he had to overcome a lot of challenges to get to where he is now and he's also building a kickass product to disrupt an old-school industry.
KPIs or key performance indicators are measures of the performances of different aspects of a campaign. There are many different types of insights you can gain from tracking email KPIs.
