BoxTrapper or Box Trapper
The cPanel BoxTrapper or Box Trapper allows you to activate email verification for those not on your white list. This means that any mail address that is not placed on your white list will be required to send back a verification email to ensure that they are not a spammer. This function can be quite useful in preventing automatic mailings that you do not wish to receive from reaching your inbox. Learn more: http://www.cpanel.net/docs/cpanel/Box_Trapper.htm
