If you are responding to me, I definitely do not work for Apple.
You're NOT addressing Apple or any responsible, cognizant Apple teams or employees here.
These are user to user Apple product technical support community forums.
Aside from Apple Support Community employees moderating these forums, and the occasional Apple technical technical support specialists assigned to these support communities, who help us all out here, from time to time, we are all users, like you, who volunteer our time to help out our fellow users with Apple product technical issues and solutions.
Did you follow my solution about the Photos app?
Have you tried a hard reset of your iPad by holding down both the Home and sleep/wake buttons simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons?
Not sure why iOS Mail app keeps increasing, but if you have set up any local folders in the Mail app, which you can do, emails maybe are being saved into these localised folders.