I imagine at a baseline, they have to be paying customers but I generally agree. I've signed up for a few sites that have reached out based purely on my email a

I imagine at a baseline, they have to be paying customers but I generally agree. I've signed up for a few sites that have reached out based purely on my email address. I think I once signed up for HERE Maps who kept calling me. I had to explain that I was using it in a personal, non-commercial capacity and had just happened to accidentally use my work email.