Gmail Data Can Now Shape Google Ads: How to Opt Out

Google quietly changed one line in its privacy policy on October 16, and it's the kind of edit I'd normally scroll past. This one matters, though. For years the policy flatly said Google didn't show you personalized ads based on what's in your Gmail, Drive or Google Photos. That sentence now has a catch on the end. Android Authority noticed it first.

What happened

The current Google Privacy Policy still says it doesn't personalize ads using your Drive, Gmail or Photos content, but now adds "unless you choose to make data from these services available to other Google services that support personalized ads." It also gives an example: Search may use data you've let it access to personalize content, ads included.

The way you'd "choose" that is Personal Intelligence, the feature that lets AI Mode in Search and the Gemini app pull context from your connected apps. Google's own Search help page says connecting Gmail, Calendar and Photos lets every Search service see that data, and that list covers Search with AI Mode and Discover, Maps, Shopping, News, Flights, Hotels and Translate. Around the same time, Search Engine Land reported Google had started testing ads in AI Mode for people who connected their apps.

Google's line, given to Ars Technica and The Verge, is that connecting apps is opt-in, ads won't be based directly on your inbox or photo library, sensitive information isn't used to tailor ads, and advertisers never see your connected data.

Why it matters

I don't think Google is reading every email to sell you shoes. But "not directly" is doing a lot of work. If AI Mode uses a summary of your flight confirmation email to answer a question, and the ads next to that answer are tuned to the same context, then your Gmail is part of the ad picture. That's a real shift from the old promise, which had no conditions at all.

The other problem is consent. Personal Intelligence is opt-in, sure, but Google has been pushing it with prompts and pop-ups, and lots of people tap "connect" without thinking about ads. You may have switched it on months ago and forgotten.

What to do

• Check whether your apps are connected. In your Google Account, go to Data & privacy > Personalization settings > Manage Personalized Recommendations in Search Services > Connected Content Apps (that's the path Ars Technica lists). Turn off Gmail, Calendar and Photos if you don't want them feeding Search.
• In the Gemini app, open the Personal Intelligence settings and disconnect anything you don't actually use.
• Visit My Ad Center if you'd rather switch off personalized ads altogether. You'll still get ads, just less targeted ones.

If privacy on your devices is on your mind anyway, my guide to blocking ads on Android with Private DNS is a good next step. It won't change what Google knows about you, but it does cut down on tracking across apps.