Ms Outlook Addons For Mac

Posted By admin On 29/12/21

Outlook add-ins are integrations built by third parties into Outlook by using our web-based platform. Outlook add-ins have three key aspects:

  • The same add-in and business logic works across desktop (Outlook on Windows and Mac), web (Microsoft 365 and, and mobile.
  • Outlook add-ins consist of a manifest, which describes how the add-in integrates into Outlook (for example, a button or a task pane), and JavaScript/HTML code, which makes up the UI and business logic of the add-in.
  • Outlook add-ins can be acquired from AppSource or sideloaded by end-users or administrators.

Outlook add-ins are different from COM or VSTO add-ins, which are older integrations specific to Outlook running on Windows. Unlike COM add-ins, Outlook add-ins don't have any code physically installed on the user's device or Outlook client. For an Outlook add-in, Outlook reads the manifest and hooks up the specified controls in the UI, and then loads the JavaScript and HTML. The web components all run in the context of a browser in a sandbox.

The add-in is available for Outlook on Windows, Mac, web, and mobile. Teams Meeting add-in in Outlook for Windows The Teams Meeting add-in is automatically installed for users who have Microsoft Teams and either Office 2013, Office 2016, or Office 2019 installed on their Windows PC. Microsoft Office allows you to add more functionality through add-ins. Many modern add-ins also work with Office for iPad, Office Online, and Office for Mac–not just traditional desktop versions of Office for Windows. Add-ins are available for Microsoft Word, Excel, PowerPoint, Outlook, Project, and SharePoint.

The Outlook items that support add-ins include email messages, meeting requests, responses and cancellations, and appointments. Each Outlook add-in defines the context in which it is available, including the types of items and if the user is reading or composing an item.

Microsoft is bringing some much-needed improvements to its Outlook for Mac app. Starting this week, Outlook for Mac beta testers (in the Fast Ring) will be able to access a new design that comes. The Adobe Sign for Outlook add-in allows a user to configure a new agreement from within their email client by either composing a new email, starting from a blank slate, or by replying to an existing email, importing the recipient list, and automatically attaching any files from the source email.


If you plan to publish your add-in to AppSource and make it available within the Office experience, make sure that you conform to the Commercial marketplace certification policies. For example, to pass validation, your add-in must work across all platforms that support the methods that you define (for more information, see section 1120.3 and the Office Add-in application and availability page).

Extension points

Extension points are the ways that add-ins integrate with Outlook. The following are the ways this can be done:

Ms Outlook Addons For Mac
  • Add-ins can declare buttons that appear in command surfaces across messages and appointments. For more information, see Add-in commands for Outlook.

    An add-in with command buttons on the ribbon

  • Add-ins can link off regular expression matches or detected entities in messages and appointments. For more information, see Contextual Outlook add-ins.

    A contextual add-in for a highlighted entity (an address)

Mailbox items available to add-ins


Ms Outlook Addons For Mac Windows 10

Outlook add-ins activate when the user is composing or reading a message or appointment, but not other item types. However, add-ins are not activated if the current message item, in a compose or read form, is one of the following:

Ms outlook addons for mac installer
  • Protected by Information Rights Management (IRM) or encrypted in other ways for protection. A digitally signed message is an example since digital signing relies on one of these mechanisms.


    • Add-ins activate on digitally signed messages in Outlook associated with a Microsoft 365 subscription. On Windows, this support was introduced with build 8711.1000.

    • Starting with Outlook build 13229.10000 on Windows, add-ins can now activate on items protected by IRM. For more information about this feature in preview, see Add-in activation on items protected by Information Rights Management (IRM).

  • A delivery report or notification that has the message class IPM.Report.*, including delivery and Non-Delivery Report (NDR) reports, and read, non-read, and delay notifications.

  • A draft (does not have a sender assigned to it), or in the Outlook Drafts folder.

  • A .msg or .eml file which is an attachment to another message.

  • A .msg or .eml file opened from the file system.

  • In a shared mailbox, in another user's mailbox, in an archive mailbox, or in a public folder.

  • Using a custom form.

In general, Outlook can activate add-ins in read form for items in the Sent Items folder, with the exception of add-ins that activate based on string matches of well-known entities. For more information about the reasons behind this, see 'Support for well-known entities' in Match strings in an Outlook item as well-known entities.

Supported clients

Outlook add-ins are supported in Outlook 2013 or later on Windows, Outlook 2016 or later on Mac, Outlook on the web for Exchange 2013 on-premises and later versions, Outlook on iOS, Outlook on Android, and Outlook on the web and Not all of the newest features are supported in all clients at the same time. Please refer to articles and API references for those features to see which applications they may or may not be supported in.

Get started building Outlook add-ins

To get started building Outlook add-ins, try the following.

  • Quick start - Build a simple task pane.
  • Tutorial - Learn how to create an add-in that inserts GitHub gists into a new message.

See also

Ms Outlook Addons For Mac Windows 7


In this article, you'll walk through the process of building an Outlook task pane add-in that displays at least one property of a selected message.

Create the add-in

You can create an Office Add-in by using the Yeoman generator for Office Add-ins or Visual Studio. The Yeoman generator creates a Node.js project that can be managed with Visual Studio Code or any other editor, whereas Visual Studio creates a Visual Studio solution. Select the tab for the one you'd like to use and then follow the instructions to create your add-in and test it locally.



If you aren't familiar with Node.js or npm, you should start by setting up your development environment.

  • Node.js (the latest LTS version)

  • The latest version of Yeoman and the Yeoman generator for Office Add-ins. To install these tools globally, run the following command via the command prompt:


    Even if you've previously installed the Yeoman generator, we recommend you update your package to the latest version from npm.

Create the add-in project

  1. Run the following command to create an add-in project using the Yeoman generator:


    When you run the yo office command, you may receive prompts about the data collection policies of Yeoman and the Office Add-in CLI tools. Use the information that's provided to respond to the prompts as you see fit.

    When prompted, provide the following information to create your add-in project:

    • Choose a project type - Office Add-in Task Pane project

    • Choose a script type - JavaScript

    • What do you want to name your add-in? - My Office Add-in

    • Which Office client application would you like to support? - Outlook

    After you complete the wizard, the generator will create the project and install supporting Node components.


    You can ignore the next steps guidance that the Yeoman generator provides after the add-in project's been created. The step-by-step instructions within this article provide all of the guidance you'll need to complete this tutorial.

  2. Navigate to the root folder of the web application project.

Explore the project

The add-in project that you've created with the Yeoman generator contains sample code for a very basic task pane add-in.

  • The ./manifest.xml file in the root directory of the project defines the settings and capabilities of the add-in.
  • The ./src/taskpane/taskpane.html file contains the HTML markup for the task pane.
  • The ./src/taskpane/taskpane.css file contains the CSS that's applied to content in the task pane.
  • The ./src/taskpane/taskpane.js file contains the Office JavaScript API code that facilitates interaction between the task pane and Outlook.

Update the code

  1. In your code editor, open the file ./src/taskpane/taskpane.html and replace the entire <main> element (within the <body> element) with the following markup. This new markup adds a label where the script in ./src/taskpane/taskpane.js will write data.

  2. In your code editor, open the file ./src/taskpane/taskpane.js and add the following code within the run function. This code uses the Office JavaScript API to get a reference to the current message and write its subject property value to the task pane.

Try it out


Office Add-ins should use HTTPS, not HTTP, even when you are developing. If you are prompted to install a certificate after you run the following command, accept the prompt to install the certificate that the Yeoman generator provides. You may also have to run your command prompt or terminal as an administrator for the changes to be made.

  1. Run the following command in the root directory of your project. When you run this command, the local web server will start (if it's not already running).

  2. Follow the instructions in Sideload Outlook add-ins for testing to sideload the add-in in Outlook.

  3. In Outlook, view a message in the Reading Pane, or open the message in its own window.

  4. Choose the Home tab (or the Message tab if you opened the message in a new window), and then choose the Show Taskpane button in the ribbon to open the add-in task pane.


    If you receive the error 'We can't open this add-in from localhost' in the task pane, follow the steps outlined in the troubleshooting article.

  5. Scroll to the bottom of the task pane and choose the Run link to write the message subject to the task pane.

Next steps

Congratulations, you've successfully created your first Outlook task pane add-in! Next, learn more about the capabilities of an Outlook add-in and build a more complex add-in by following along with the Outlook add-in tutorial.


Ms Outlook Addons For Mac
  • Visual Studio 2019 with the Office/SharePoint development workload installed


    If you've previously installed Visual Studio 2019, use the Visual Studio Installer to ensure that the Office/SharePoint development workload is installed.

  • Office 365


    If you do not have a Microsoft 365 subscription, you can get a free one by signing up for the Microsoft 365 developer program.

Create the add-in project

  1. On the Visual Studio menu bar, choose File > New > Project.

  2. In the list of project types under Visual C# or Visual Basic, expand Office/SharePoint, choose Add-ins, and then choose Outlook Web Add-in as the project type.

  3. Name the project, and then choose OK.

  4. Visual Studio creates a solution and its two projects appear in Solution Explorer. The MessageRead.html file opens in Visual Studio.

Explore the Visual Studio solution

When you've completed the wizard, Visual Studio creates a solution that contains two projects.

Add-in projectContains only an XML manifest file, which contains all the settings that describe your add-in. These settings help the Office application determine when your add-in should be activated and where the add-in should appear. Visual Studio generates the contents of this file for you so that you can run the project and use your add-in immediately. You can change these settings any time by modifying the XML file.
Web application projectContains the content pages of your add-in, including all the files and file references that you need to develop Office-aware HTML and JavaScript pages. While you develop your add-in, Visual Studio hosts the web application on your local IIS server. When you're ready to publish the add-in, you'll need to deploy this web application project to a web server.

Update the code

  1. MessageRead.html specifies the HTML that will be rendered in the add-in's task pane. In MessageRead.html, replace the <body> element with the following markup and save the file.

  2. Open the file MessageRead.js in the root of the web application project. This file specifies the script for the add-in. Replace the entire contents with the following code and save the file.

  3. Open the file MessageRead.css in the root of the web application project. This file specifies the custom styles for the add-in. Replace the entire contents with the following code and save the file.

Update the manifest

  1. Open the XML manifest file in the Add-in project. This file defines the add-in's settings and capabilities.

  2. The ProviderName element has a placeholder value. Replace it with your name.

  3. The DefaultValue attribute of the DisplayName element has a placeholder. Replace it with My Office Add-in.

  4. The DefaultValue attribute of the Description element has a placeholder. Replace it with My First Outlook add-in.

  5. Save the file.

Ms Teams Outlook Add In For Mac


Try it out

  1. Using Visual Studio, test the newly created Outlook add-in by pressing F5 or choosing the Start button. The add-in will be hosted locally on IIS.

  2. In the Connect to Exchange email account dialog box, enter the email address and password for your Microsoft account and then choose Connect. When the login page opens in a browser, sign in to your email account with the same credentials as you entered previously.


    If the Connect to Exchange email account dialog box repeatedly prompts you to sign in, Basic Auth may be disabled for accounts on your Microsoft 365 tenant. To test this add-in, sign in using a Microsoft account instead.

  3. In Outlook on the web, select or open a message.

  4. Within the message, locate the ellipsis for the overflow menu containing the add-in's button.

  5. Within the overflow menu, locate the add-in's button.

  6. Click the button to open the add-in's task pane.


    If the task pane doesn't load, try to verify by opening it in a browser on the same machine.

Ms Outlook Addons For Mac Os

Next steps

Congratulations, you've successfully created your first Outlook task pane add-in! Next, learn more about developing Office Add-ins with Visual Studio.