"this message has no content" in Mountain Lion

I am using Sierra (10.12.6) and I have the same error message “This message has no contents” with Mail.app while the message is okay on the webmail.

I really wonder if the Apple staff uses Mail.app since this is not the only uncorrected bug for long.

I currently have this issue, rebuilding and cleaning the mail boxes does nothing... I did not tice once I passed 3000 messages the mail application starts getting funky.

Here are my symptoms:

• First the email app stops marking read messages.
• App starts slowing down.
• Calendar starts giving me it can not communicate with the server
• Then it starts showing me no content email messages

So here is my opinion but I need help to confirm... Gathered from this very common problem...

• Mac OS does not handle weak or slow internet connections well and does not recover well (Noticed at this at the airport today, also notice this on the iphone, bad wifi really kills any sort of functionality). This might cause the requests to end unexpectedly and return nothing...
• There seems to be a size limitation the mail application can handle properly or there is a memory leak in the mail application. From what I read it uses a free DB product that likely doesn't handle large amounts of data very well.

Likely going to switch to Outlook 2011 unless Apple fixes these problems (Apple likely will not fix this as seen in all the dead end blogs for this subject), or not use the mac for work as this makes things more painful than it needs to be.

Same problem here. :s Hope Apple can fix this VERY soon.. What time did you wait for the content to eventually load? It took me over 2 hours or so..

Update: Could not find a solution to Mail, had to switched to Outlook, restarting mail and calendar app every few minutes was not reasonable.

Few other notes... noticed that the the calendar works better in Outlook for importing calendar items ( ex. Hockey schedules... Mac Calendar does not handle timezones correctly and shifts times 2 hours)...

If you decide to go to office way the only thing you need to worry about is Office installing duplicate or incompatible fonts which seem to crash outlook or cause performance issues. There is a way to delete duplicate fonts and have Mac download the appropriate fonts which corrects most of these problems.

Hope Mail and Calendar gets the fixes it needs.

I believe 10.8.2 has actually made this issue worse. Previously I could delete the affected message, then wait a second or 2 and do an undo. Then the message would display. Now, when I delete, the message remains in view and doesn't go away. The menu bar does show that I have an option to "Undo Delete Message" as if it tried to, but nothing happened.

I agree, I updated to 10.8.2 and now the problem is much worse, I have tried to do a repair but all that did is corrupt it to the point I delete the account from mail and reinstall it. I do have several thousand messages I am going to work on deleting. In the meantime is looks like Outlook will be the solution.

I also have this problem, Mail v6.2(1499) on Mountain Lion 10.8.2. I'm on corporate LAN, so link speed has nothing to do with it.

The content is definitely there, as you can see it in View->Message->Raw Source. If I restart Mail, the message contents show up in the main pane, although "This message has no content" is in the preview window.

It looks like the Mail app just doesn't parse certain reply messages properly.

The only solution that I've found to work (not really a solution), is to delete the problematic email and then undelete. It usually loads the email correctly at that point. You have to give it a second or two when you delete. *****, but it's the only thing that works now. C'mon Apple! Fix Please!

Glad I'm not the only person with this problem. Sure wish Apple would fix it soon though because I am trying to rid my computer of all things Microsoft and really don't want to have to use Outlook again. And yes, it did seem to get worse with the last update to Mountain Lion.

PLEASE GOD APPLE FIX IT! And oh yeah, releasing the new Mac Pro in the next month or two would be awesome too. Hope I'm not asking to much there...lol.

Message was edited by: kstearnes

still an ongoing issue for me, have to keep going to my iphone or ipad to see the content of certain emails. Not good.

Exactly the same for me. Email from exchange server likes to appear empty. Had to go back to Outlook.

I am having exactly the same issue. Very fustrating!