I'm pretty sure they didn't when it first started in the early 00's, and it was sort of big news when they explicitly updated their terms to say they did as rec

I'm pretty sure they didn't when it first started in the early 00's, and it was sort of big news when they explicitly updated their terms to say they did as recently as 2014. https://www.theguardian.com/technology/2014/apr/15/gmail-scans-all-emails-new-google-terms-clarify https://www.theguardian.com/technology/2014/apr/15/gmail-sca...