This is probably why no Guest has ever accessed my "Hospitality" information. (at least according to my Dashboard).
How did you get this message? I would love to see what mine look like.
That being said, possibly the email program does NOT display external images by default?
That's what mine does. I have to click "Load Remote Content" to get those to display (not attachments but HTML - linked images in the email body)
At the risk of being rude, as I wrote earlier, this email was opened on a machine that is set to download all pictures, links, etc. as it is used to test webpages and communication by various means. All email products are set to open all parts of messages. I understand precisely what you are saying about the mail settings. I have worked in IT for 30 years.
The only time that I was able to see the message with pictures was on an iPhone.