Outlook and Exchange dev blog
The official Microsoft blog for Outlook, Exchange developers for both On-Premises and Office 365
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...
Date: 01/19/2018
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...
Date: 12/14/2017
New Outlook APIs in the Microsoft Graph: rooms, rules, categories, headers, and time zones
In June, we announced new APIs in the beta endpoint of the Outlook REST API. Today we're excited to...
Date: 10/09/2017
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...
Date: 06/30/2017
Check out the new Outlook Dev Portal!
Hi there! We are excited to bring to you the new and improved Outlook dev portal. It's got a new...
Date: 06/08/2017
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...
Date: 06/01/2017
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...
Date: 04/07/2017
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...
Date: 03/20/2017
Add-ins are now available for Outlook on iOS
We're now excited to bring add-ins to Outlook mobile, starting with Outlook on IOS, with support for...
Date: 02/08/2017
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...
Date: 01/26/2017
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...
Date: 01/20/2017
Update to Filtering and Sorting in the REST APIs
We recently deployed a breaking change to the Microsoft Graph V1.0 and the Outlook V1.0 & 2.0...
Date: 12/07/2016
Actionable messages developer documentation now available
In September, we announced Actionable message for connectors and email in preview. We are excited to...
Date: 11/18/2016
Upcoming breaking changes - FindMeetingTimes API on Outlook BETA endpoint
We want to give you a heads up on some changes that are coming to the FindMeetingTimes API which has...
Date: 10/10/2016
Actionable messages for connectors and email now in preview
We're excited to announce a preview of Actionable Messages which embed actions in both connectors...
Date: 09/26/2016
Introducing Request Validator to beta endpoint
I wanted to update you all on a breaking change that we are making to the Outlook REST API Beta...
Date: 06/15/2016
Announcing Exchange ActiveSync version 16.1
We are excited to announce enhancements to Exchange ActiveSync (EAS) in Office 365 and a future...
Date: 06/13/2016
Upcoming changes to Contacts and People APIs
This is an update about breaking changes that we are making that only impact Contacts and People...
Date: 06/09/2016
Task API changes to date properties on beta endpoint
I wanted to update you all on a breaking change that impacts the Task API on the Outlook REST API...
Date: 05/06/2016
Upcoming changes to the FindMeetingTimes (Preview) API
I wanted to give you all a heads up on some changes that are coming to the FindMeetingTimes...
Date: 04/29/2016
Transition your app from Live APIs to Outlook REST APIs
As you might know, we have a new v2 auth model that supports sign-on and access to Microsoft Graph...
Date: 04/06/2016
Tasks, OOF settings, and more improvements to the REST APIs
We wanted to update you on multiple additions and improvements we have made to our APIs since...
Date: 03/31/2016
Updates to Outlook add-ins!
We are excited to make a number of announcements about Outlook add-ins platform. First, as we...
Date: 03/31/2016
ErrorInvalidParameter when subscribing to Outlook notifications
We are aware of an issue impacting apps that use the Outlook Notification API to subscribe for...
Date: 03/28/2016
Announcing the Office 365 Connectors developer platform
We are happy to announce the generally availability of the Office 365 Connectors developer platform...
Date: 03/28/2016
Changes to collections and recurrence in REST API
I wanted to give an update on some more breaking changes that we are making to the Outlook REST API...
Date: 11/06/2015
Subscription and notification schema changes in beta REST API
I wanted to update you all on some more breaking changes that we are making to the Outlook REST API...
Date: 10/21/2015
Changes to reminders, timezones, and photos in REST API
I wanted to update you all on some more breaking changes that we are making to the Outlook REST API...
Date: 10/14/2015
Outlook REST API changes to beta endpoint
We are making a few changes to the Office 365 REST APIs beta endpoint. The changes are being rolled...
Date: 10/08/2015
Message Body property will filter unsafe HTML by default
We are making a change in what is returned by default in the Message Body property. By default, we...
Date: 09/03/2015
Deprecating the REST API preview endpoint
As many of you know, the Outlook REST APIs moved from preview to general availability in October...
Date: 09/02/2015
Building add-ins with commands
Today we bring you the second in a two-part series of guest blog posts from Andrew Salamatov, a...
Date: 09/01/2015
Introducing add-in commands
Today we bring you the first in a two-part series of guest blog posts from Andrew Salamatov, a...
Date: 08/31/2015
Unified Outlook APIs for Office 365 & Outlook.com are here!
We are excited to announce Outlook REST APIs for mail, calendar, and contacts now support both...
Date: 08/12/2015
Announcing Exchange ActiveSync v16
One advantage of having your mailbox in Office 365 is that we usually deploy our innovations there...
Date: 06/08/2015
Office 365 API Walkthrough for Windows Store App
With Office 365 API Tools, you can integrate Office 365 services - including Mail, Calendar,...
Date: 05/15/2015
Making App Registration Easier
I know I've been a little quieter than usual recently. No new blog posts, no new samples...you'd...
Date: 05/07/2015
Check out dev.outlook.com!
As you can probably tell from announcements we made at BUILD this week like add-ins for Outlook...
Date: 04/30/2015
Populate your Office 365 Developer Tenant with sample data
An Office 365 Developer Tenant is a great resource for developing with the Office 365 REST APIs. It...
Date: 04/03/2015
Ruby gem for Mail, Calendar, and Contacts APIs
Today I published a new Ruby on Rails sample, the Office 365 VCF Import/Export Sample. It's...
Date: 03/24/2015
Announcing Outlook Mail Apps UserVoice page
We at Microsoft put our users’ satisfaction first. It is even more important for us in the...
Date: 03/24/2015
Office 365 APIs and Node.js
UPDATE: The node-outlook library that is discussed in this post has been updated with a new...
Date: 03/12/2015
Customizing the read experience with contextual mail apps for Outlook
It is common for messages and meeting requests to include key pieces of information users need to...
Date: 03/03/2015
Using the Calendar API in PHP
In the same spirit as my Python experiment, I decided to give PHP a try and see how far I could get...
Date: 02/26/2015
Announcing C# Support in the API Sandbox for Office 365 APIs
Today we bring you a guest post from Xiaoying Guo, a Senior Program Manager in our Cloud Platform...
Date: 02/24/2015
Ruby on Rails and Office 365 Tutorial
I published a quick tutorial on writing your first Office 365 API app using Ruby on Rails. The...
Date: 02/12/2015
Client Credentials Flow for Mail API in Python
Matthias announced support for the Client Credentials flow in the Mail, Calendar, and Contacts APIs...
Date: 02/10/2015
Building Daemon or Service Apps with Office 365 Mail, Calendar, and Contacts APIs (OAuth2 client credential flow)
Device and Web Server applications usually require a user to sign-on and consent to allow the...
Date: 01/21/2015
Office 365 APIs and Python Part 3: Mail and Calendar API
This post is the third part of a series of posts chronicling my (mis)adventures learning Python and...
Date: 01/15/2015
Office 365 APIs and Python Part 2: Contacts API
This post is the second part of a series of posts chronicling my (mis)adventures learning Python and...
Date: 01/09/2015