Google is integrating Gemini AI into Gmail, introducing features like AI Overviews to summarize long email threads and answer inbox questions. New tools include "Help Me Write" for drafting and refining emails, and "AI Inbox" to prioritize important messages. These updates aim to transform Gmail into a proactive personal assistant for managing crowded inboxes. Some features are free for all users, while advanced capabilities like conversational search are limited to Pro and Ultra subscribers. The rollout begins in the US in English, with global expansion planned.