1. In order to enable spam protection in cPanel, you need to go for the cPanel login first.
  2. Then you need to click on the Box Trapper icon. This uses to protect your inbox from spam mails. It only allows the whitelist email senders to send email to your inbox.
  3. In order to enable box trapper for an email, you need to click on the manage button. Then you need to click on the enable button.
  4. With this box trapper will be enabled for the email address you have selected.
  5. This is how you can protect your inbox from spam mails. 

enable spam protection in cPanel

enable spam protection in cPanel

enable spam protection in cPanel