ChatGPT Messages plugin for Mac accesses your entire chat history

appleinsider.com

OpenAI has launched a Messages plugin for ChatGPT on Mac, allowing the AI to access, search, summarize, and draft replies within Apple's messaging app, with user approval required for sending. The plugin, announced August 20, 2026, works via AppleScript and Accessibility features, and is available for ChatGPT Work and Codex on desktop. OpenAI states it operates on-device without creating an index, but users must grant full access to their Messages history during setup. This follows OpenAI's January 2026 integration with Apple Health data, which drew criticism and lawsuits over potentially inaccurate medical advice. Apple has not commented, and the plugin is currently Mac-only, not iPhone.


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