Google sent out a notification that it will automatically opt you into using content from your email campaigns to help Google know what to show in Google Search, Shopping, and Maps. It will look for content around “new arrivals, sales or ongoing promotions, social media profiles, and others,” Google said.
Don’t use Proton. The owner of the company is a Trump supporter. Also, Proton is based in Switzerland, I think a EU service is better for European citizens.