The lastest iOS 9 update deleted all my saved emails and would not receive any new. I deleted and reinstalled email account, but now I cannot set account not to clear server after getting new mail.
After updating to iOS 9.2, my email stopped receiving and all saved messages were deleted. I deleted and reinstalled my email account and now is working fine, however all messages are being deleted from server. There is no option under "advanced" as there used to be to leave messages on server.
iPad (3rd gen) Wi-Fi, iOS 9.0.2