A new extra field is now available that gives information about the raw original document.

Original raw document can now be extracted as an new extra field called OriginalDocument
OriginalDocument field is a JSON object composed of the following properties:
- name: A string that represents the name of the original document. It's the file name if the document was converted from an attachment or a file, or the email subject if the document originates from an email.
- url: A secure HTTPS URL where the raw, original document can be downloaded. Important note: Anyone you give that URL to can access the document content without authentication, so think twice before sharing this URL.
- content_type: A string that contains the MIME type of the original document. For example: "message/rfc822" for emails, or "application/pdf" for PDF files.
- size: The size of the original email, in byte.
Only documents received after this feature deployment (On October 8th, 2020) will have the OriginalDocument populated.