How To Restrict On Facebook
1. Login to Facebook and go to the Account drop-down menu at the top of any Facebook page and choose "Privacy Settings."
2. Select "View settings" in the "Basic Directory site Information" section.
3. Change the setting for "Send me messages." Your alternatives include Everyone, Pals and Pals of Friends.
Just e-mails from people that fall within the message privacy setting you pick will be provided to your Facebook Messages. For example, if you choose the "Friends Just" setting, you will not get messages from e-mail addresses that are not validated to be among your buddies. Rather, those senders will receive automatic bounce-back replies.
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