Galaxy S6 :: Why Sporadic Emails Not Deleting / Reappearing

I have a Samsung Galaxy S6 on Verizon. Stock Email program with corporate Exchange email account. 2 emails that I delete on the phone just won't go away. No matter how many times I delete them, or which method I use, I even tried moving them to the Trash folder, they pop back up in my inbox. Confirmed they are completely deleted on the Exchange server. I have cleared the cache and cleared the data on the multiple Email programs in the application manager multiple times, they still come back, just these two specific emails. I also booted into the menu and wiped the whole cache partition, no luck.