Ninja is a web application and browser extension that lets you easily mask your email when you want to sign up on a website. It automatically generates a relevant email for you based on the specific website or newsletter you are signing up on. You can then view emails from that website on our web app or you can choose to forward them to your personal email address. The main focus of Ninja is to make sure that your privacy is respected and your email is not sold to other parties. You can disable a masked email address at any time from our web app page and you will stop receiving emails from that website.