Error improvement for invalid X-AnchorMailbox in REST API calls

Update 1/29: Based on feedback, we’ve adjusted the HTTP status code to 400 instead of 421. All other details remain the same. We wanted to give you a heads-up on a recent change to the error returned by the Outlook REST API when the value of the X-AnchorMailbox is incorrect. If your app has error-handling…


Announcing add-in support for Gmail accounts in Mac Outlook

In March, we announced support for Gmail accounts in Outlook 2016 for Mac. Today we’re happy to announce preview add-in support for Gmail accounts in Outlook 2016 for Mac. Limitations When add-ins are loaded in a Gmail mailbox, there are a few limitations to take into account. You cannot use Exchange Web Services (EWS) to…


Announcing new REST APIs in beta for rooms, time zones, and languages

Today we're pleased to announce some new APIs that are available on the beta endpoint for the Outlook REST API. These are currently only available via the Outlook endpoint (https://outlook.office.com/api/beta) and not the Microsoft Graph API endpoint. Try these new APIs out today, either in your code, or on the Outlook OAuth Sandbox. Leave feedback…


Upcoming change to Event schema in the Outlook REST API beta endpoint

We wanted to give you a heads-up on upcoming changes to how locations are exposed for events in the Outlook REST API. Outlook recently introduced the option to use multiple locations to schedule meetings and appointments. The feature is designed for meetings scheduled for persons and teams spanning different regions, for example, some people attending…


Throttling coming to Outlook API and Microsoft Graph

Update 12/4/17: Updated the post with the current limits. On April 21, we will be enabling throttling on the Outlook REST APIs (accessed via https://outlook.office.com/api or https://outlook.office365.com/api), and on the Outlook-related endpoints of the Microsoft Graph (accessed via https://graph.microsoft.com). We wanted to give developers some advanced warning to make sure you were prepared!


Add ins are now available for all Outlook on Mac users

Add-ins bring your favorite apps right inside Outlook, so you can accomplish tasks quickly without needing to switch back and forth between email and other apps. Add-ins are a great way to increase usage of your apps by making them accessible directly within Outlook. Last year, we announced the rollout of add-ins to Outlook 2016…

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Pinnable Taskpane in Outlook 2016

Have your add-in users been asking you for the ability to leave the add-in taskpane open in their mailbox as they switch between messages? At Ignite this year, we announced the addition of a new feature for Outlook add-ins, the Pinnable Taskpane. Today we are excited to announce this feature is now officially available in…

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Add-in Commands in OWA and Outlook on the Mac

Add-ins are a great way to increase usage of your apps by making them accessible directly within Outlook. We previously announced add-in commands availability in Outlook desktop. Add-in commands have simplified the user interaction with add-ins while also making their presence more visible and engaging. We are pleased to announce the add-in commands feature is…

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