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    Build powerful apps for hundreds of millions of users using one set of APIs

    Build powerful Outlook apps using one set of APIs

    Reach hundreds of millions of users across web, Windows, Mac, and mobile.

    LEARN MORE

    Interactive emails

    Learn how Adaptive Cards can increase productivity by allowing users to take quick actions from within their Inbox.

    GET STARTED

    Extend Outlook

    Help users get more done with add-ins. Launch your custom app as a taskpane, contextual card, or a simple button on the ribbon.

    GET STARTED

    Connect to Outlook

    Bring Outlook-related data & features for Office 365 & Outlook.com users into your app using the Microsoft Graph REST API.

    GET STARTED

    News and updates

    • Basic Authentication and Exchange Online – February 2021 Update 

      Due to the pandemic and the effect it has on priorities and work patterns, we are announcing some important changes to our plan to disable B...

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    • Letsignit leverages the Outlook Add-ins Platform to manage email signa...

      Today we’d like to introduce you to Sébastien Telouk who is the Vice President of Sales at Letsignit, an email signature management solution...

      VIEW BLOG
    • Outlook REST API v1.0 deprecation update

      Today we are announcing that on April 30, 2021, we will fully deprecate the Outlook REST API v1.0 endpoint.

      VIEW BLOG
    • Outlook REST API v2.0 production and beta endpoint deprecation

      Today, we are announcing the deprecation of Outlook REST API v2.0. The API will be decommissioned on November 30, 2022.

      VIEW BLOG
    • Microsoft 365 App Compliance Program is now integrated into Partner Ce...

      Our Microsoft 365 App Compliance program is now integrated into Partner Center and will be generally available starting November 16th, 2020....

      VIEW BLOG
    • Office Add-ins community call–October 14, 2020 

      In this months community call we demonstrate how to register Office Add-ins in Office on the web using URL query parameters and Outlook upda...

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    • Outlook add-ins and optional connected experiences

      We want to share an important update regarding how Outlook add-ins behave when the optional connected experiences privacy setting is turned ...

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    • Office at Ignite 2020

      Welcome to Ignite 2020! While this year feels different compared to others, we are excited to share our sessions for this year and hear from...

      VIEW BLOG
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    Latest code samples and videos

    • Microsoft Graph Webhooks Sample for Node.js

      This sample NodeJS web application shows how to subscribe to change notifications using webhooks. This sample also supports receiving change...

      VIEW CODE SAMPLE
    • Power Apps community call-February 2021

      This month's community call featured an introduction to Layout Containers, auto refresh BI visuals in Microsoft Power Apps using the new Mic...

      VIEW VIDEO
    • Office Add-ins community call - February 2021

      This month's community call featured presentations on Outlook add-in compatibility with COM/VSTO add-ins (how can your COM Add-ins in Outloo...

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    • Office Add-ins community call-January 2021

      This month's call, hosted by David Chestnut, featured Outlook Event driven add-ins and the new Microsoft 365 App submission experience.

      VIEW VIDEO
    • Sideloading and Debugging Outlook Add-ins

      Courtney Owen, Sr Software Engineer, shows a demonstration of how to debug Outlook add-ins with Visual Studio Code.

      VIEW VIDEO
    • Outlook add-in with SPFx to save attachments to SharePoint using Micro...

      In this 13-minute Developer - focused demo, Aakash Bhardwaj shows functionality visible within the user’s Microsoft Outlook environment, del...

      VIEW VIDEO
    • SharePoint PnP - SPFx & JavaScript SIG community call – 5th of Novembe...

      SharePoint PnP Community - SPFx & JS SIG call on November 5. Demos delivered: 1) PnP Field File Type field customizer reusable control, 2)...

      VIEW VIDEO
    • Office Add-ins community call-October 2020

      This month's call, hosted by David Chesnut covered topics including Visual Studio Code sideload for WAC, Outlook and Excel Ignite Recap and ...

      VIEW VIDEO
    VIEW MORE

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