Cant change email preview??

So after the update, I cant change email previews?

When I go into hub settings, display&actions, instant preview settings, applications, Emails: it only shows two of my 5 email accounts?? And it shows duplicates of 8 of one, and 4 of another? How to fix?

I recently deleted two email accounts and reset them up, and started getting previews, but I want to turn off previews to only emails.

Q10, running 10.2.1.2141

I would delete all your email accounts and reboot the phone. Then try to set up the accounts again.