If they're using our products, no. We don't serve ads based on the content of your email or your Hangouts. All we do is search that content to make sure you're not seeing malware or experiencing a phishing attempt or some sort of breach to your personal security. We run automated systems to ensure the security of your account, but we're not serving ads based on the content of your Gmail in that particular specific way. Especially in the two contexts you just described—
On May 10th, 2018. See this statement in context.