Google added "unless" to its Gmail ad promise. Here's what changed

In 2017, Google promised that consumer Gmail content would not be used or scanned for any ads personalisation. This month, that promise got an update.

The short answer: Google doesn't use your emails for ads by default, and not directly. But if you connect Gmail, Calendar or Google Photos to Personal Intelligence in Google Search, Google says the AI's summaries, excerpts and inferences from them may be used to show you ads.

The promise, and how long it held

Before 2017, free Gmail showed ads tailored by automated analysis of your mail (PCWorld). Then Diane Greene, who ran Google Cloud, wrote that free Gmail would line up with the paid business version and stop using email content for ads.

Google repeated it in 2021. According to 9to5Google, Gmail showed a banner saying your email content is "never used for any ads purposes". That July, Google's privacy policy gained one flat sentence: "We don't show you personalized ads based on your content from Drive, Gmail, or Photos." It sat unchanged for more than five years.

Notice the word it rests on: content. The words and pictures you store.

Did Google delete the promise? No: it added "unless"

On 16 October 2026, the sentence changed. Some headlines said Google had killed it. But read the new policy and the old sentence is still there, almost word for word. What's new is an 18-word clause on the end:

"...unless you choose to make data from these services available to other Google services that support personalized ads."

Gmail's own help page now carries the same exception, and still says Gmail does not scan or read your messages to show you ads. So the promise wasn't deleted. It got an exit, and the exit is marked "unless you choose". Choose what?

The choice: Personal Intelligence

Personal Intelligence lets AI Mode, the chatbot-style answer box in Google Search, draw on your Gmail, Calendar and Google Photos. Google's own example: ask Search about your trip, and it can use your hotel booking email to suggest things to do nearby.

It launched in January 2026 for paying subscribers in the US, and by May it was free in nearly 200 countries and territories. It's opt-in: you connect your apps yourself. You have to be an adult signed in to a personal account; work and school accounts are left out. Google's country list skips the EU and the wider European Economic Area, the UK and Switzerland, and Google doesn't say why. How many people have connected? Google hasn't published a number.

What travels from your inbox to the ads?

Google's Search help page answers it. First line: ads will not be based directly on your Gmail inbox or your Google Photos library. Then: if you connect your apps, Search may reference summaries, excerpts and inferences (conclusions the AI draws about you) from them, and "that same info may be used to show you ads".

Walk one email through it. Gmail is connected, and a hotel booking lands in your inbox. You ask AI Mode what to do near your hotel. The AI reads the booking (if the email is short, Google says it may use the whole thing) and pulls out a note: which hotel, which dates, that you're travelling. That note helps answer your question. Under the new wording, the same note may also be used to show you ads. The email itself doesn't go to an advertiser; Google says advertisers get no access to your inbox.

The email stays put. The note travels.

What Google doesn't say: how long a note lasts, where it's kept, or whether it reaches ads outside AI Mode.

Why now?

Because ads are arriving in those answers. On the day the new policy took effect, Google told Search Engine Land it is starting to test ads in AI Mode for users who connect their apps. That's Google's word through one outlet; no countries or scale were reported. In March, Google had told the same site there were currently no ads for people who connect their apps, and that wasn't changing "right now".

The order matters. Ads were coming to answers that can read your mail, so the old flat sentence couldn't stay flat. Without the clause, it would stop being true for those users.

What "not directly" really means

Put the two promises side by side:

• 2017: Gmail content won't be used for ads personalisation.
• 2026: Ads won't be based directly on your inbox.

Both can be true at once. The old one protects content: the words in your mail. It never said anything about conclusions drawn from them. That's where the line moved. It used to sit at your emails; now it sits at what an AI concludes from your emails. "Not directly" is accurate. It's also the whole story.

Is it a betrayal? Google's case

Here's Google's case, as strong as we can make it. Connecting is entirely opt-in, and you do it yourself. Google wrote the exception down in public, and even edited its own 2017 post instead of leaving an old promise up untouched. It told Ars Technica that what advertising partners receive doesn't change, and that sensitive information won't be used to tailor ads. Its policy still says it doesn't hand advertisers your name or email unless you ask. And search ads have always followed your question: ask about things to do near your hotel and a tour ad is what you'd expect anyway; the note just knows which hotel. Free AI answers cost money to run, and ads are how Search has always paid for itself.

Against that: Google never defines "directly", doesn't say how long a note is kept, and in March said there were no ads here. That's a fair fight, and the deciding vote is yours.

Before you cast it, one more line from Google's help page: "Please don't connect your Google content apps if they contain personal or confidential information" that you wouldn't want used for training generative AI models. That warning is about training, not ads. Google also says human reviewers see a subset of AI Mode data, and disconnecting doesn't delete your Search Services History, which can still be used to improve its products, including training AI models.

How to check your settings

Google says it's updating these menus, so look for the destination rather than an exact path.

1. The data switch. In your Google Account, open the personalisation settings for Search and find Connected Content Apps. If the list is empty, you haven't made the choice this clause is about. If Gmail or Photos is there and you'd rather it wasn't, disconnect it.
2. The broader switch. In Gmail's settings, smart features in other Google products. Turning it off also removes Gmail extras in Maps and Wallet.
3. The ads switch. In My Ad Center, turn personalised ads off; ads then lean on context, like the topic you're looking at. Google hasn't said whether this alone covers connected apps, so if you want to be sure, use the data switch.
4. What's already saved stays saved. You can clear it at activity.google.com.

Every one of these works both ways: reconnect any time if the answers are worth it.

Google's 2017 page now holds two sentences: the promise and the update. One is about your emails. The other is about the notes. Which one applies to you is now a setting you can check.

Sources

1. Google Privacy Policy, 16 Oct 2026: policies.google.com
2. Google Privacy Policy, 12 Oct 2026 version: policies.google.com
3. Google Privacy Policy, 1 Jul 2021 version: policies.google.com
4. Google Search Help, connected apps: support.google.com
5. Gmail Help, how Gmail ads work: support.google.com
6. Gmail Help, smart features: support.google.com
7. My Ad Center Help: support.google.com
8. Google blog, Diane Greene, 23 Jun 2017 (updated 16 Oct 2026): blog.google
9. Google blog, 22 Jan 2026: blog.google
10. Google blog, 17 Mar 2026: blog.google
11. Google blog, 19 May 2026: blog.google
12. Ars Technica, 23 Oct 2026: arstechnica.com
13. Search Engine Land, 16 Oct 2026: searchengineland.com
14. Search Engine Roundtable, 19 Oct 2026: seroundtable.com
15. Search Engine Land, Mar 2026: searchengineland.com
16. Notebookcheck, 24 Oct 2026: notebookcheck.net
17. 9to5Google, 19 May 2021: 9to5google.com
18. PCWorld, 2014 Gmail terms: pcworld.com
19. The Drum, 23 Jun 2017: thedrum.com