Email content not loading (Ventura 13.0) - already rebooted in safe mode, unchecked "protect mail activity"

To begin with Ventura 13.0 was released Oct 24, 2022.

There have been two additions updates since then.

The Current stable Version of Ventura is 13.1 released Dec 13, 2022

The User may want to read fro the below links related to keeping the OS up to date and also regarding the Security Update of Ventura 13.1

Keep your Mac up to date

About the security content of macOS Ventura 13.1 - Apple Support (CA)

Welcome

Being a secondary poster on this question

A few possible solution specific to your computer issue ➡️

1 - Restart in Safe Mode. This will perform a Disk Repair, clear cache files and only load Apple Software, extensions and fonts. The boot up will be slow and can take some time - Normal.

2 - Safe Mode will also eliminate Third Party Software, extensions and drivers from loading 

3 - Does the issue present in this mode ?

4 - Sometimes a Safe Boot followed by a Normal Boot will just put things right.

5 - If not - there could be something in the main User Account playing up. To further isolate this - Set up users, guests, and groups on Mac. Then log out of the Main User account and log into the dummy account and test again if the issue persists.

6 - If the issue is present in the dummy account - then, this appears to be a System Wide issue on the computer.

7 - Download the Application Etrecheck directly from the Developer.

This is a Diagnostic Tool that makes no changes to the computer.

It makes a coherent and readable inventory of both the Hardware and Software used on the computer 

The application is free or paid from added features. 

The Report will Not Reveal Any Personal Information. 

Post back the Full Report - copy and paste - >>>> using the Additional Text Icon ( 3rd Icon to last ) <<<<

Everything you tried is a fix for not loading remote content. If the email has no content it has nothing to do with the privacy settings.

It may just be that you need to rebuild the mailbox (Mailbox menu). Mail creates a database index of all the messages so it can display them quickly and search them quickly. That database is used to form the message list and the raw message is extracted from the message file when selected. There seems to be something broken between the database and the file link.

Still a problem. Anyone got anything?!?

Thanks P. Phillips. My Mac has been running 13.1 since it was released; I keep it updated. What I'm saying here is that this mail thing is still an issue today. I should've clarified.

Barney-15E, thank you! I tried rebuilding the mailbox already and it doesn't appear to do anything. There's no progress indication. And everything remains as it was.

Thank you, P. Phillips! I will try this ...

Remove the email account and add it back.

Thank you, Moore D10. I will try!