Microsoft Graph API for Add-in

Question

I have built an office Add-in.
My requirement is that we need to reply to an email and draft an Email through my Add-in to the selected conversationId.

For that i need to use Microsoft Graph API as Outlook REST APIs are deprecated.

Can anyone help me in getting token inside my add-in to use microsoft Graph API.

Answer 1

Hi @Neha Sevlani ,

Hope you are doing good.

I find a sample of building an Office Add-in for Excel that uses the Microsoft Graph API for your reference. It can be used as a reference for your Outlook add-in development

To obtain the access token for Microsoft Graph, you need to register you application in Azure AD, make sure you provide right roles/permissions so that you can get a token. Using the token you can access a protected resource like Microsoft Graph API. You can get started quickly with the documentation on getting tokens and the tutorial on creating a simple application.

The SSO authentication method uses the OAuth2 On-Behalf-Of flow provided by Azure Active Directory, which is also an authentication method using Microsoft Graph. It requires that the add-in register in the Application Registration Portal and specify any required Microsoft Graph scopes in its manifest. Here for your reference: https://learn.microsoft.com/en-us/office/dev/add-ins/outlook/authentication

Hope this helps you.

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