A 23-Year-Old Just Turned an AI Assistant Into $2.5 Billion. It Wants Your Inbox Forever.
Instinct's personal AI agent hit a $2.5B valuation on a $250M Series B, up 50x in four months — as security experts flag its perpetual grip on your inbox.

Gemini built into Gmail: free thread summaries, Help Me Write and suggested replies
Gmail now has Google's Gemini AI built in. Since January 2026 thread summaries (AI Overviews), Help Me Write and suggested replies that match your tone are free for personal accounts, starting in the US in English, while paid Google AI plans add plain-language questions about your inbox, Proofread and the new AI Inbox view.
Latest: In January 2026 Google made Gmail's AI Overviews, Help Me Write and suggested replies free, starting in the US.
Good summaries and drafting at no extra cost; reviewers find its phrasing generic and it does less automation than dedicated tools.
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Instinct's personal AI agent hit a $2.5B valuation on a $250M Series B, up 50x in four months — as security experts flag its perpetual grip on your inbox.
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