This message has no content in MAIL
This issue I have had on some mails ever since I have bought a MacBook Pro with M1 chip. If it is related I have no clue. I have addressed Apple with no results. I have searched the community with answers and nothing has worked. Done all the recommended settings back and for. Installed a temporary mail box to move it back and for and also without success. On some such emails I have been able to get the content visual by opening it on others it did not work.
On all other apple gadgets I have I see the these mails with contents.
The only way around is to log in to iCloud.com and read these mails out from there. There you can always see the content correctly.
I find it a nuisance to do so and I find it annoying from Apple not to address the issue and come up with a solution.
By the way I have had it with different OS systems from Monterey to Ventura. I even recently completely reinstalled the MacBook Pro from scratch due to some other issues. And thought that perhaps it would restore the problem. But it did not.
Shame on Apple to be unable to help the community of apple users or that they simply just ignore us.
Taking all the money from us for the more expensive equipment but with a lousy service (at least in some areas)