Before You Go:
1. Sign in to Facebook.
2. Navigate to your Facebook Messages.
3. Click on the Claim your Facebook email link you find on top of the page.
4. Now you will see a pop up box with your profile URL including your username and the Facebook email you gonna claim. Click Activate Email button.
Note: If you still unable to create a username for your Facebook profile, it will prompt to create a Facebook username before you have a Facebook email address.
5. Now you have successfully set up your Facebook email address. All your incoming emails from external parties and bulk emails will be moved to Other folder. And spam emails will be hidden from you.