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Google switched Gmail into what it calls its “Gemini era” this year, turning on a wave of AI features by default for roughly three billion users: AI Overviews in search, automatic thread summaries, Help Me Write, suggested replies, and an AI Inbox that assembles a daily briefing from your messages. Nobody was asked. The features simply appeared.
If your reaction was to go looking for the off switch, you’ll find it exists, and you’ll also find Google hid it behind an unusually annoying design decision: the settings live in two separate places, and switching off only the first leaves AI running elsewhere. Worse, turning it all off costs you some genuinely useful things that have nothing to do with AI.
Here’s the full picture: what Gmail’s AI actually processes, both switches, the honest trade-offs, and where the viral panic about this goes wrong.
What Gmail’s AI Actually Processes
The AI features work on your email content. That’s the plain answer, and it’s not sinister on its face: summarizing a thread requires reading the thread, and suggesting a reply requires understanding the message. Google’s position is that this processing happens to deliver features to you, that your personal Gmail content isn’t used to train its general AI models, and that Workspace data carries specific protections.
A widely shared claim in January asserted the opposite: that users had been silently opted into having private messages and attachments used for AI training. It spread fast, and Google disputed it directly, saying it hadn’t changed anyone’s settings and doesn’t use personal Gmail content to train Gemini models. The honest reading, and the reason we keep coming back to this pattern with Meta’s features too: the specific viral claim overstated things, and the underlying discomfort is still legitimate. AI features you didn’t request, processing correspondence you consider private, enabled without asking, is a reasonable thing to want switched off regardless of what the training policy says.
So let’s switch it off.
The Master Switch (and Why One Isn’t Enough)
On desktop: click the gear icon, then See all settings, and stay on the General tab. Scroll to Smart features (sometimes labelled “Smart features in Gmail, Chat, and Meet”) and uncheck it.
Then, crucially, find the link beside it for Google Workspace smart features (also called “Manage Workspace smart feature settings”) and turn off the toggles there too. This second location governs AI features across other Google products, and unchecking only the first box leaves them running. Save changes at the bottom.
On mobile: open the Gmail app, tap the hamburger menu, scroll to Settings, tap your account, then find Data privacy, where you’ll find Smart features and, separately, the Google Workspace smart features menu. Switch off both.
Three details that catch people out. These settings don’t sync between accounts, so repeat this for every Gmail address you use. They also don’t fully sync across platforms, so check both desktop and mobile. And the Workspace toggle applies broadly across Google products, so you only need to set that part once per account.
Turning Off Individual Features Instead
If the all-or-nothing switch feels heavy-handed, some features have their own controls, which lets you keep the useful conveniences while killing the intrusive ones. In Settings, General, look for Smart Reply and Smart Compose and set each to off. That removes the predictive text and the three canned reply buttons while leaving the rest intact.
A small trick for AI Overviews specifically: they surface when you search your mail, and adding a search operator to your query (for example including in:anywhere or any explicit operator) tends to return plain results rather than an AI summary. Not a setting, just a habit that works.
A note for work accounts: if your Gmail is a Workspace account managed by your employer, some Gemini controls sit with the administrator rather than with you. The personal toggles above still help, but full removal may need an admin’s involvement.
What You Lose (The Part Google Doesn’t Advertise)
Here’s the genuinely irritating part, and the reason to think before flipping the master switch: Google bundled long-standing, non-AI conveniences into the same setting. Turning off smart features also disables spell check, grammar check and autocorrect, the inbox categories that sort mail into Promotions and Social, package tracking in Gmail, and automatic calendar events from flight and hotel confirmations. Some users also lose Maps and Wallet conveniences tied to email content.
That bundling is a choice, and not a neutral one: it raises the price of opting out. My honest recommendation is to try the individual toggles first (Smart Reply and Smart Compose off) if your real objection is to AI writing suggestions rather than to content processing in principle. Reach for the master switch when the principle is the point, and go in knowing you’re trading spell check for it.
If you do lose inbox categories and your inbox gets messier as a result, filters fill the gap perfectly well, and we’ve covered how to build them in our guide to stopping spam.
What You Can’t Turn Off
Two honest limits. There’s no single Google-wide AI off switch: Gmail, Photos, Chrome, Android’s assistant, and Search each have their own controls, and turning off Gmail’s smart features doesn’t quiet the rest. And some surfaces have no consumer off switch at all, most notably AI Overviews in Google Search, which can be sidestepped with the Web filter but not disabled outright for personal accounts.
There’s also a security dimension worth knowing: AI features that read your email introduce a new attack surface, since researchers have demonstrated prompt-injection attacks where hidden instructions inside a message manipulate an AI assistant into doing something it shouldn’t. It’s the same structural problem we covered with agentic AI browsers, and it’s a reason to treat AI-summarized email with the same scepticism you’d apply to the message itself.
Quick Answers
Is Gmail using my emails to train Google’s AI?
Google says personal Gmail content isn’t used to train its general AI models, and disputed the viral January claim that users had been silently opted in. The features do process your email content to deliver summaries and suggestions, which is what the settings below control.
How do I turn off AI in Gmail?
Settings, See all settings, General, uncheck Smart features, then open Google Workspace smart features and turn those toggles off too. Both locations are required.
Why do I still see AI features after turning them off?
Usually because only one of the two settings was changed, or because the settings weren’t repeated on every account and device. They don’t sync between Gmail addresses.
Does turning off Gmail AI disable spell check?
Yes. Google bundled spell check, grammar check, inbox categories, package tracking, and calendar event detection into the same smart features setting.
Can I keep some AI features and turn off others?
Yes. Smart Reply and Smart Compose have individual off switches in General settings, which is the lighter-touch option if predictive text is your main annoyance.
The Bottom Line
Gmail’s AI arrived switched on, and switching it off takes two settings rather than one, repeated on every account you own. Whether you should is a judgement call rather than an obvious yes: the viral claim about training on your private mail was overstated, but wanting AI out of your correspondence is entirely reasonable, and Google made that choice more expensive than it needed to be by tying spell check and inbox sorting to the same switch. Start with Smart Reply and Smart Compose if predictive text is the real irritant, use the master switch if the principle matters more than the conveniences, and remember to check back after big Gmail updates, because features that arrive by default have a way of arriving again.
