I've got a similar problem. But resolved if images are embedded in Outlook emails via customer mobiles, and not classed as attachments. If I forward the customer's email and copy the Forwarded Email Body and paste H in a docx, the images are wrapped/justified. Just trying to code this, I have one attempt from
Page Not Found - Slipstick Systems which I have changed to docx with header and attachment list which my method doesn't do. Haven't managed to add to the code to resolve yet, looks like going to have to code my way and paste H and sort out a full header.