ClickBank Sale Notification plugin will automatically send you an email notification every time there is a transaction in your clickBank account. Its support any type of transactions ( Sale, Rebill, Refund, Chargeback, Cancel Rebill ) and it also works for both affiliate and product vendor. How to Get ClickBank Secret Key? Go to your ClickBank Account Settings » My Site » Advanced Tools Editor. Click the Edit link in the top right corner of Advanced Tools Editor. Create your Secret Key – up to 16 letters/digits ALL CAPS. Fill in the Instant Notification URL with: http://YOURSITE.com/notify.php. Use the Secret Key you created before in the plugin settings.