If you hate it when you check your email and only find Facebook email notifications, you can turn this feature off in your Facebook Account Settings. You can choose to receive summary emails or stop them altogether.
Log in to your Facebook account.
Click on the arrow in the upper right corner of your Facebook home page and profile. Click "Account Settings" from the drop-down menu.
Click on the Notifications tab in the left column of the screen. Click the box under "Email Frequency" to limit your emails to important updates and summary emails only.
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Go to the All Notifications section and click "Edit" next to each category. Unclick all the boxes to eliminate all Facebook email notifications or selectively click only those boxes next to categories about which you want to receive emails.