Query regarding JavaScript API for calling Graph API from Outlook Add-in Iframe

Question

Query regarding JavaScript API for calling Graph API from Outlook Add-in Iframe

Soujanya KC 10

Hello Microsoft Support,

We are currently developing Outlook Add-ins and have been using the https://outlook.office.com/api/v2.0/me/messages/{{Office.context.mailbox.item.itemId}}//attachments API to fetch attachment content for the current email. We obtain the token for this API using the JavaScript API Office.context.mailbox.getCallbackTokenAsync(callbackfunction).

We have noticed that the Outlook APIs are deprecated, and we are aware of the equivalent Graph API https://graph.microsoft.com/v1.0/me/messages/{{Office.context.mailbox.item.itemId}}/attachments. However, we have been unable to find a JavaScript API that allows us to fetch a one-time online token for calling the Graph API from the Outlook Add-ins iframe.

Our question is, does a JavaScript API exist that enables us to call the Graph API from within the Outlook Add-ins iframe?

We have been using https://appsforoffice.microsoft.com/lib/1.1/hosted/Office.js for the Outlook Add-in JavaScript APIs.

We would greatly appreciate any guidance or information you can provide regarding this matter. If there are any alternative solutions or workarounds to obtain a one-time online token for calling the Graph API, please let us know.

Thank you for your assistance.

Best regard,
Soujanya KC.

Faery Fu-MSFT 19,896 Reputation points Moderator

2023-06-28T02:10:32.6333333+00:00

Hi @Soujanya KC ,

It seems that you are encountering issue about graph, please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client and know little about it. To better help solve your issue, I added the “Microsoft Graph Mail API“ tag in your post.

Thanks for your understanding and hope your issue can be resolved.