A few years ago, I set up a free Google Workspace account on my domain and configured a catch-all email. Anything in the username field of the domain routed to my user account, for example, uber@notcheckmark.com ended up at me@notcheckmark.com. I wanted to see who shared my email and give myself a way to block those bad actors. If Uber started selling my email, I could just trash everything to ube