How to read email attachments using MS Graph API

Hi Mayank Gupta,

Thank you for reaching out, Microsoft!

You can use below endpoint to read email attachments and mark an email as read using the Microsoft Graph API.

Part 1: Reading Email Attachments

Set Up Permissions:

• Ensure your application has Mail.Read or Mail.ReadWrite permissions.

1. Get the Message ID:
   • Use the list messages API to retrieve emails from the inbox. This will give you the message IDs.

      GET https://graph.microsoft.com/v1.0/me/messages
   

2. Retrieve Attachments:
   • Use the list attachments API to get the attachments for a specific message.

      GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments
   

   1. Download Attachment:
      • To download the attachment, use the get attachment API.

            GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments/{attachment-id}/$value
      

Part 2: Marking an Email as Read

1. Set Up Permissions:
   • Ensure your application has Mail.ReadWrite permissions.
2. Mark as Read:
   • Use the update message API to mark the email as read.

      PATCH https://graph.microsoft.com/v1.0/me/messages/{message-id}
   

   Please check below screenshot for details:
   1. Before Patch request:
      
   2. After Patch request to update isRead property:
   Hope this helps. References:
   Attachments Graph API
   Update-Messages Graph API If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.

Hello Mayank Gupta, first retrieve the email message to get its ID. You can use the "list messages" API for this. Once you have the message ID, you can retrieve the attachments using the "get attachments" API post which you can append the /$value to the request URL to get the raw content of a file attachment. So, the workflow would be something like the below.

GET https://graph.microsoft.com/v1.0/me/messages

GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments

GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments/{attachment-id}/$value

Similarly, to mark an email as read, you need to update the isRead property of the message. It would be something like the below.

PATCH https://graph.microsoft.com/v1.0/me/messages/{message-id}

Content-Type: application/json

{

"isRead": true

}

You may want to read this documentation page - https://learn.microsoft.com/en-us/graph/api/attachment-get?view=graph-rest-1.0&tabs=http

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