inline images vs regular attachments in msg files?

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Content-Type: text/plain; charset="UTF-8"

All,
  Is there an easy way to determine if an image attachment is intended to
be rendered in the email or is a regular attachment?
  I can scrape the txt, html, rtf bodies for the reference/link, but that
feels like work.

  Thank you.

            Best,

                  Tim

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