Microsoft MVP, Microsoft Support Visiting Expert,
https://blogs.office.com/2015/08/12/new-outlook-partner-add-ins-and-expanded-rollout-of-outlook-com-preview/Earlier this year, we announced a preview of the new Outlook.com that lets you make the most of the moments that matter to you, featuring a refined inbox, new ways to collaborate, an upgraded calendar and support for partner add-ins. Today, we are pleased to announce new partnerships with Evernote, Yelp, IFTTT and Wunderlist to deliver solutions for both consumer and commercial Outlook users. Additionally, the Uber, PayPal, Evernote and Boomerang add-ins are beginning to roll out today. We’re excited about how partners are enhancing the Outlook experience through this integration.
In addition to new partners, we are also expanding the preview of the new Outlook.com to a broader audience. We enhanced the service based on feedback from our initial set of preview users and are broadening the rollout so that more users get access to these features faster.
Partner add-ins extend your email capabilities
Partner add-ins help you get more done right from your inbox—from finding cool restaurants for a dinner with friends to setting up a ride to get there and paying your portion of the tab. Here are more details on what you can do with these partner solutions: