Facebook gives you an option to stop strangers from sending you messages. This is extremely useful when you are posting on many Facebook Groups and Pages. Here are the steps to enable the same. The steps have been updates to reflect September 2017 Facebook changes.
1. To get started, Login to facebook.com. Enter your email and password, click on login. If you have any login issue, read our Facebook Login help page.
3. Under “How You Connect“, Click on “Edit Settings“.
4. In “Who can send you Facebook Messages“, Select “Friends” from the drop down. Click on “Done” after making the selection.