Please add http://www.leadchampion.com
You just add the code they provide in your pages, the same way you'd do with iubenda. I've used their terms to write the content to add as a custom services, with their optOut link. This tool tracksback the user and, if it appears to be a company, it retrieves company related info from public databases and www resources. It would take a lot of time to do this yourself, so it does come handy when you want to find out if it's worth contacting them.