Google is upgrading Gmail with new AI features to help users better manage their email. The Gemini side panel can summarize email threads, draft new emails, and provide proactive prompts. Users can also ask freeform questions, leveraging Google's advanced models like Gemini 1.5 Pro. Additionally, in the Gmail mobile apps, Gemini can summarize threads for added convenience. However, these features are only available to paid Gemini users, such as Google Workspace customers with specific add-ons or Google One AI Premium subscribers. While these AI enhancements could be beneficial, users are advised to use caution and not solely rely on them for important work emails. AI technology is not infallible, so it's essential to double-check any emails drafted with Gemini before sending them.