Regular Gmail users have long been complaining about their privacy being intruded on for them to see contextually aware ads. But with Google trying to grow its enterprise customer base, there have been concerns among its current clients and promising ones that Google plans to use their data for their advertising business. Hoping to assuage fears, this is the policy Google is choosing to employ for everyone later this year. They will still continue to scan emails for potential spam or phishing attacks as well as offer automated reply suggestions. But you have to take note that they will still show ads and use data from its other services like YouTube and Search to give you these advertisements.
Source: New York Times