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| Users who connect Gmail to Google Search can see ads based on summaries of their own emails. |
Google has updated its privacy policy to allow data from connected Gmail, Drive, and Photos accounts to influence personalized advertising—a significant departure from a pledge the company had maintained for over five years.
The revised policy, effective October 16, 2026, adds a crucial exception to what was previously an unconditional promise. Google now states it won't show personalized ads based on content from these services "unless you choose to make data from these services available to other Google services that support personalized ads." The change, first spotted through Google's privacy policy archive, marks the first time since July 2021 that this advertising exclusion has been modified.
How the Data Actually Flows
The exception's practical application centers on Personal Intelligence, Google's opt-in feature that connects Gmail and Google Photos to Search and Gemini Apps. According to Google's support documentation, when users enable this connection, Search services can reference insights from emails and photos to provide tailored responses—for example, suggesting restaurants based on past reservation confirmations found in Gmail.
Critically, the same information used to personalize search results may now inform ad selection. Google's help page states that ads won't be based "directly" on Gmail inboxes or Photos libraries, but acknowledges that "summaries, excerpts, generated media, and inferences" derived from that content "may be used to show you ads."
The distinction carries weight. In cases where an email is brief or particularly relevant, Google notes the summary may simply be the email itself.
Testing Already Underway
The policy change didn't arrive in isolation. According to reporting from Search Engine Land, Google confirmed it has begun testing ads in AI Mode for users who connected apps through Personal Intelligence. The company had previously stated in March 2026 that AI Mode with Personal Intelligence enabled carried no ads.
PPC Land's analysis reveals the policy shift represents the first modification to this advertising language across 17 versions since July 2021. The publication's line-by-line comparison shows Google added personalized content as a third basis for ad targeting, alongside user interests and activity.
Training and Human Review Included
Connecting apps to Search services enables more than just personalized answers and ads. Per Google's official privacy policy, the data may also train generative AI models. The help documentation confirms that while Search services "do not train generative AI models directly on your Gmail inbox," they do train on summaries and inferences drawn from that content. A subset of this data undergoes review by human reviewers, including trained service providers.
Disconnecting the apps later doesn't erase what's already been collected. Data saved in Search history can still be used for product improvement and AI training until users manually delete it through their Google Account activity settings.
Geographic Limitations and Safety Measures
The feature remains unavailable in the European Union, United Kingdom, and Switzerland—a pattern consistent with Google's approach to other Gemini integrations. The connection option is limited to users 18 and older in supported countries across the Americas, Asia, and Africa.
Google maintains that sensitive categories—including health, religion, race, and sexual orientation—remain excluded from ad personalization regardless of connected app status. Advertisers receive no direct access to Gmail or Photos content.
Related Changes Signal Broader Strategy
The privacy policy update coincides with other connected-app developments. As detailed on the Google Workspace Updates blog, Gemini Notebook became available as a connected app within the Gemini interface on October 23. Like Personal Intelligence, this feature defaults to on globally but remains off by default in the European Economic Area until users explicitly enable it.
What Users Should Know
For those in supported regions, the connection setting lives under Search Services Personalization in Google Account settings. Workspace and Google Photos can be disconnected separately. Ad personalization preferences are managed independently through My Ad Center.
Google's help page offers pointed guidance for privacy-conscious users: "Please don't connect your Google content apps if they contain personal or confidential information that you wouldn't want to be used for training generative AI models."
The policy change reflects Google's ongoing integration of AI features across its product ecosystem—and raises familiar questions about the trade-offs between personalized convenience and data privacy that users must navigate.