Outlook.com, Microsoft’s web-based email and calendaring client, is now open to third-party developers who want to build tools on top of it. Using the Outlook API, developers can build what Microsoft calls “contextual experiences” for Outlook.com. This is clearly part of Microsoft’s overall effort to make the data that its users create in its productivity apps available outside of these tools.
It looks like Microsoft is going to take a deliberately slow approach to bringing these add-ins to its users, though. This summer, Uber and the email scheduling tool Boomerang will launch their add-ins. With this, Uber will allow you to schedule a ride from the Outlook calendar and Boomerang will bring its smart calendar assistant and email reminders to Outlook.com.
Over time, Microsoft will open this feature to more developers, too, but it’s unclear when it plans to do so.