- In your Gmail app, go to Settings.
- Select your Gmail address.
- Clear the Smart features checkbox.
- Go to Google Workspace smart features.
- Clear the checkboxes for: Smart features in Google Workspace, Smart features in other Google products
- If you have more Gmail accounts, repeat these steps for each one.
- Turning off Gemini in Gmail also disables basic, long-standing features like spellchecking, which predate AI assistants. This design choice discourages opting out and shows how valuable your AI-processed data is for Google.
This has finally gotten me to take steps to deGoogle my email, Fastmail trial underway.



That doesn’t make any sense as a reason to turn off Gemini in your inbox though. Either you are ok with having your emails scanned and used in ML systems, in which case why bother turning off the feature; or you aren’t and turning off the feature doesn’t help you.
Oh, I completely agree. Using Gmail is the problem here, and no amount of settings fiddling will solve that.