For PC Users
Sign Into Your Facebook Account. On The Left Top Corner, Press On The Arrow Next To Account, A Drop-Down Menu Appears. Click On Account Settings Then Click On The Notification Tab. You Will See A Huge List Of Boxes You Can Tick Or Un-Tick. Choose Which Email Notifications You Want Facebook To notify You About.When You Are finished, Scroll Down To The End Of The Page And Press On The Save Changes Button.

For Mobile Phone Users
Sign In To Facebook With Your Browser, Locate Settings At The End Of The Page, Click On It And Locate And Click On Notifications, Untick The Boxes To Stop Facebook From Flooding Your Mailbox