Apple Mail with empty messages and no content

If anyone is following this thread, this problem continues to occur despite applying all of the suggestions in all Community forums, Google searches, Apple articles, etc. I upgraded my MacBook Air 15" to Sonoma thinking that would work. It doesn't. I can retrieve the "no content" emails on my iPhone but that is annoying and really unnecessary, isn't it? This is clearly a macOS problem. Can't the geniuses at Apple fix this? If you have found a solution, please offer it and then sell it to Apple! Thanks for responding. Rod

I have the same problem with ventura 14.2.1. I've tried rebuilding the database and booting in safe mode. It is weird that if I show the raw source for the message (View>Message>Raw Source) the content is there!

Thanks Pete! I also find failed emails more often in the morning as well. Again, I think content fails to download while third-party mail applications and Apple Mail servers are trying to connect which can be observed using Menu>Window>Connection Doctor. Each time Mail attempts to retrieve email, it has to resolve server/port conflicts and the download is interrupted. Sometimes rebuilding the "Inbox" mailbox or moving "no content" emails to a "Recovered Messages" mailbox works but it is inconsistent and a hassle. Sometimes nothing works other than going to my iPhone and forwarding the email that has the content. I update every time there is a Sonoma update but this has not been fixed. My Apple Support agent escalated this problem to the engineer level but to date has no response. If they do, or if I stumble on some other solution, I'll post it here. Rod

Hi Jeff . . . check out this detailed discussion on this topic elsewhere in the Community: https://discussions.apple.com/thread/254755902?sortBy=best

Thanks! I did post on the thread you indicated...