Probably the relevant bit: > To provide you features like smart inbox categories, Smart Compose, and spam detection, we use Gmail data to provide a more intell

Probably the relevant bit: > To provide you features like smart inbox categories, Smart Compose, and spam detection, we use Gmail data to provide a more intelligent email experience and keep you safe. - https://support.google.com/mail/answer/10434152?hl=en https://support.google.com/mail/answer/10434152?hl=en Famously, a while back, at some Google subdomain, you could see a list of all of your payments extracted from your emails, but I'm not sure that still exists.