To download a specific file, you must first list the attachments for a particular message to find its ID.

Before making any requests, ensure your Azure app registration is configured with the correct permissions:

import requests # Define headers with your Access Token headers = { 'Authorization': 'Bearer YOUR_ACCESS_TOKEN' } # The endpoint for raw content url = 'https://graph.microsoft.com/v1.0/me/messages/{msg_id}/attachments/{attach_id}/$value' response = requests.get(url, headers=headers) if response.status_code == 200: with open('downloaded_file.pdf', 'wb') as f: f.write(response.content) Use code with caution. C# (Using Graph SDK v5)

If you need the file name, size, or content type alongside the data, use the standard GET request without /$value . The file content will be returned as a Base64-encoded string in the contentBytes property.