Yahoo mail is blank. Has no content in Apple Mail

markpaci wrote:

I have several email accounts. All work correctly except my Yahoo account. For emails sent to my Yahoo account, all emails appear; however, content for some of the emails is missing. Sender and Subject/Heading appear, but the page is blank.

These emails appear correctly with content on my iPhone, iPad, Apple Watch and everywhere else.

You can try rebuilding that Yahoo inbox

Rebuild mailboxes in Mail on Mac - Apple Support

no resolve—

For problem accounts the go to way to sort things out is to delete the account(s) from the Mail.app, then add it back.

Remove email accounts in Mail on Mac

Remove email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Note—

IMAP accounts stay on the server, so no local loss, when you re-sync

POP accounts download and remove from the server—therefor save your inbox/sent box if you want them

“On My Mac" is just that, local folders you created and moved mail into. So no loss

Issue was reported awhile back and I had to reinstall my OS to fix. Perhaps this will help:

Mail does not include body of message - Apple Community