In Outlook, click File > Manage Add-ins. In Outlook Web App, click Settings > Manage add-ins. Under Manage add-ins, in the Turned on column, select the check box for the add-in you want to enable. Learn how to enable an app for Outlook.

Use an add-in while composing a message. Create a new message or reply to an existing one. From the ribbon, select the Message tab, then choose the add-in you want to use. If the add-in doesn’t appear in the ribbon, select Apps to view your installed add-ins.

Select File > Get Add-ins. Alternatively, you can also view your add-ins directly from the Home tab by selecting Add-ins . You can directly install add-ins from this page or select More Add-ins to explore. In the Office Add-ins dialog, select My Add-ins tab.

When you select the Import Settings option during setup, the web add-in counterparts of your existing COM add-ins in classic Outlook for Windows are installed in the new client. The following table lists the applicable COM add-ins and their web add-in counterparts.

You can use the new web Office Add-ins in most of the Office 2016, Office 2019, and Microsoft 365 applications. Select a heading below to open it and see the detailed instructions. Start an Office add-in for Word, Excel, PowerPoint, or Project

Access the in-app FAQs in Outlook for iOS or Android. Easily find the info you need by searching the comprehensive in-app FAQ! Outlook for iOS. Tap your profile photo and then the ? > FAQs. Outlook for Android. Open the Menu and go to Settings > Help & Feedback > FAQs.

Get an Office Store add-in. On the Insert tab, look for the Add-ins group. To get new add-ins, select Get Add-ins. To use add-ins you already have, select My Add-ins . The add-ins you'll see will depend on the kind of Microsoft 365 subscription you have.

Use the My Office Add-ins and SharePoint page to check your add-in’s status and retrieve hidden add-ins. In Word 2016, Excel 2016, or PowerPoint 2016 click Home > My Add-ins > More Add-ins . In Project 2016, click Project > My Add-ins .

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

Add or remove an automation add-in. Add-ins provide optional commands and features for Microsoft Excel. By default, add-ins are not immediately available in Excel, so you must first install and (in some cases) activate these add-ins so that you can use them.