GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments
Before making any requests, ensure your Azure app registration is configured with the correct permissions:
To download a specific file, you must first list the attachments for a particular message to find its ID.
There are two primary ways to retrieve the data depending on whether you want the raw binary stream or the Base64-encoded metadata. Option A: Get Raw Content (Best for Files)
GET https://graph.microsoft.com/v1.0/me/messages/{message-id}/attachments/{attachment-id}/$value Option B: Get Attachment Metadata
The following snippet demonstrates how to download the raw content and save it as a file: