PowerInbox’s original attempt to save e-mail required that users install PowerInbox alongside their email client. Although users enjoyed the app functionality within their inbox, the bothersome step of installing PowerInbox limited adoption. PowerInbox has removed the install step with the launch of its open API: Connect API.
This is the part two of a three-part series covering KPIs for APIs, based on John Musser's presentation at the Business of APIs Conference. This post covers developer funnels and potential KPIs, measuring the app ecosystem, and how developer experience can make or break your API.