OpenAI Launches ChatGPT Plugin That Reads and Analyzes Mac iMessages

OpenAI rolled out a new ChatGPT plugin on Thursday that connects the chatbot directly to Apple's Messages app on Mac, enabling it to send texts, search conversation history, and analyze communication patterns with specific contacts. The feature is available now to users running the latest version of the ChatGPT Mac app.

How it works

Users install the integration through ChatGPT's Settings menu, under Integrations > Plugins > Browse directory, by searching for "Messages" and selecting Apple Messages. After installation, macOS prompts users to grant ChatGPT permission to access text message content — a required step since the AI reads message data to function.

Once connected, the plugin supports three core functions, invoked by typing "@" followed by "Messages" in a ChatGPT prompt:

• Send messages: ChatGPT can compose and send a text to a named contact, though it requires user confirmation before sending unless the user opts to always allow it for that specific chat.
• Search and summarize: Users can ask ChatGPT to find all messages mentioning a topic or contact and receive a summary of the results.
• Analyze conversations: ChatGPT can review the tone, topics, and patterns of an exchange with a specific person and offer communication suggestions.

In testing by ZDNET's Lance Whitney, the analysis feature flagged a message as likely to "invite defensiveness" and suggested alternative phrasing to produce a more productive response. The search function was also used to pull years of veterinary history mentioned across scattered text threads.

Privacy implications

The plugin requires ChatGPT to read the full content of a user's iMessage history to deliver search, summary, and analysis results. OpenAI has not disclosed how long message data accessed through the plugin is retained, whether it is used for model training, or what encryption or on-device processing safeguards apply. The feature is currently limited to Mac; there is no equivalent integration confirmed for iOS, Windows, or other platforms.

This release follows a related OpenAI feature called Computer History, which tracks Mac activity to build a timeline of user actions — part of a broader push by OpenAI to deepen ChatGPT's access to local device data and personal context.

What this means

This is a permissions and integration expansion, not a new model. The underlying ChatGPT model doing the analysis is unchanged; what's new is its access to a previously walled-off data source — private text conversations — via a local Mac plugin. The utility is real: conversation search and communication-style feedback are functions people already pay for in journaling or coaching apps. But granting an AI assistant standing read access to iMessage content is a meaningfully different privacy posture than typing prompts into a chat window, and OpenAI has offered no technical detail on data handling, retention, or training use. Users should treat the permission grant as consequential, not routine, especially given OpenAI's expanding footprint into calendar, browsing, and now personal messaging data on the same device.