Regardless of the messaging settings for incoming emails, you can activate quiet time during which ringing, vibration and
LED messaging are deactivated.
Tap the menu symbol in the menu bar.
The menu navigation is shown.
Below your email folders, tap Settings.
Tap General settings.
Under "Notifications", tap Settings for "Do Not Disturb"
Tap Turn on now or set a start and end time under "Schedules".
You have set up quiet time and will not be disturbed by messages during this time.