ipadOS 14 showing emails unread Updating iPad to 14, old emails that show as read on Mac Catalina and iPhone 13.7 show as unread on iPad. How can I get the “read” status in sync on iPad without reading every single one of them?  All three devices are IMAP so I would expect it to just work correctly.  I don’t want to update iPhone to 14 until this works.  Do I need to delete and recreate the email account on iPad (and then on iPhone)? Or will the same thing happen again? What an annoying bug! Thanks.
It’s not clear which mail client you’re using, but this isn’t a bug with the native app on iOS 14 and just something that happens.
Since you have IMAP, I would delete the account from any device you feel is out of sync. In your case, delete the account(s) from the iPad and then power cycle the iPad.
Add in one account only and see how it reacts. If fine, repeat until you’re happy. If not, there are other more intrusive steps you could take.