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Google Puts Gemini 3 Into Gmail With AI Overviews, New Writing Tools and a Previewed ‘AI Inbox’

The update begins in the U.S., shifting Gmail toward a proactive assistant with premium capabilities limited to paid AI tiers.

Overview

  • Conversation summaries via AI Overviews are rolling out free to all U.S. English users, while natural‑language “ask your inbox” answers require Google AI Pro or Ultra.
  • Help Me Write and upgraded Suggested Replies are now available at no cost, with the advanced Proofread tool restricted to paid AI plans and a personalization upgrade to Help Me Write slated for next month.
  • A new AI Inbox that prioritizes to‑dos and key messages is in limited testing with trusted testers, with broader availability planned in the coming months.
  • The features run on Gemini 3 and are launching first in English in the United States, with Google planning expansion to additional regions and languages over time.
  • Google emphasizes privacy protections, saying inbox data remains isolated and won’t train Gemini models, as analysts flag accuracy and trust as key adoption risks.