It’s a kind of JavaScript based software which can run for you every time you open a webpage in your selected browser. The software can have a UI as ell where you can see the output of your logic. We'll see how to create the extension, how to install it. We'll see a browser extension which will On page load, will check all the valid email address on the page Will highlight all the valid email Will attach a click handler on the highlighted email I'ds On click of email I'ds will open a small pop-up to ask (Send email on it ?)