It's not that unusual for a direct marketing email to fail to render [show] in the receiver's inbox. Well this one's a doozy. Below is just a fiftieth [yes, 1/50th] of the code which appeared when I opened this email:
There was a follow-up email half an hour later, but it said:
"Note: A previous version of this email contained an image that did not render correctly in some email clients. We are re-sending to those affected and we apologize for any confusion."
In my opinion, a less formal approach would have been better. Why not admit to the error rather than - seemingly - blaming the technology of the receiver.
Oh, by the way, I'll refrain from naming the company - they should be squirming enough as it is.