This app lets you set up and control your Cortana-enabled devices, including the Surface Headphones and Harman Kardon Invoke. The Cortana Device Setup app will also help you connect your music, calendar, and email accounts, stay up to date with the latest software, and give you helpful tips to get started.
If you are using a Johnson Controls GLAS thermostat you can setup the GLAS device.
Connect calendar and email accounts in the Cortana Notebook or Cortana Settings; works with Outlook.com, Office 365 and Gmail. Office 365 requires a subscription.