I did not check. I also never checked if they share my mails on google search with you -- but I trust their ambition to not be sued into the ground for doing so

I did not check. I also never checked if they share my mails on google search with you -- but I trust their ambition to not be sued into the ground for doing something immensely stupid. Leaking sensitive data of enterprise customers as training material for public recaptchas falls in that category.