I go back to old emails and when I click the email it does not match the sender or subject line at all.
Completely different email.
Lots and lots of them doing this.

A bit problematic as one example I click on one of my ATF eforms emails and an order from FCPEuro email opens.
However the top says to me from ATF eforms and the correct subject but the body of the email is completely incorrect.

Dude, I dumped Yahoo years ago since they started to have security issues.

Watch the first 30 seconds or so of this....

https://twit.tv/shows/twit-bits/episodes/3185

My yahoo is working properly and no issues.

.

That sounds super frustrating—I’ve had something similar happen before when my email app got all out of whack. For me, clearing the app's cache or reindexing the mailbox usually fixed it, but once I had to uninstall and reinstall the app to get it sorted. If you’re using a desktop client, maybe try checking your emails through the web version in the meantime—it’s not ideal, but at least it’ll show you the correct messages until you can figure out what’s causing the mix-up.

Mine is working correctly.

Looks like the issue is with the Apple mail app. Guess, I need to delete the account from Apple and redo it.
I signed in straight to yahoo and it was fine. It’s funny I have not used anything to check my yahoo mail other than the Apple mail app I did not even think about logging in to yahoo directly.

No issues with any of my non yahoo mail accounts in the Apple mail app.

My DNS and VPN has been attacked over and over and over.
So most outages are cyberattacks now.