Hi Sky,
If the instructor sent the message as a reply from their actual email (i.e. Outlook, etc.) instead of logging into Canvas and using the Inbox there, then the image attachments would have been stripped out.
Even though you can reply to Canvas Inbox messages from your actual email if you are receiving email notification, and Canvas will pass it along to the Inbox conversion, attachments do not go through when you do this. Attachments (including embedded images) can only be sent from within the Canvas Inbox.
Unfortunately, there's no way for you to view the images unless the instructor logs into Canvas and re-sends the message with the images directly from the Inbox.
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