Just the number of new emails in notification / locked screen
Suggestion to improve on iPhone/iPad:
I like how windows phone shows the number of newly arrived emails in lock screen without showing the actual message (helps to keep it secured). I would like the same in iPhone like "10 new emails" without showing the actual message for security.
Currently, I do see the red bubble in the icon but don't get notification in lock screen which needs me to unlock phone continuously on travel to check new emails, reducing battery charge.