Email Preview Panel is empty
Hiya
I'm running High Sierra and when using mail, I have the mailboxes, then list of emails, and then the preview panel. On some older emails, I can see the senders name and first couple lines of the email, but nothing shows in the preview panel, and even if I open it, there is no content.
I've tried deleting the email cache.db and a few other youtube suggestions, but nothing is working.
Any help is much appreciated.
Thanks
Jamie