Why Does Spam Happen With Max Performance Campaigns?

Has anyone used Google’s PERFORMANCE MAX campaign? I just turned it on yesterday and I’ve already gotten a few spam emails pretending to be interested clients.

Two questions: 1. Why does this happen? Who stands to benefit from sending an email to my business? Is their goal for me to reply? So should I just not reply?

I’m very curious to know why it happens.

1. Any ideas for minimizing the spam conversions? I think I’m just gonna switch the targeting to maximize conversions for purchases, so that emails and phone calls aren’t optimized for.