ChatGPT Can Now Draft Apple Messages on Your Mac

On August 20, 2026, OpenAI added an Apple Messages plugin to the ChatGPT desktop app for macOS. With permission, ChatGPT can now search a user's Messages history, answer questions about it, summarize long threads, draft replies, and send them. It is a small feature with an interesting architecture behind it — the integration runs locally on the Mac rather than shipping message history to a server.

• The Apple Messages plugin works with iMessage, SMS, and RCS threads
• It runs locally using existing macOS technologies, including AppleScript and Accessibility APIs
• Available on all ChatGPT plans, with support in ChatGPT Work and Codex, but only on the Apple Silicon build of the desktop app
• By default ChatGPT asks the user to approve both the message body and the recipients before anything is sent

Why the Local Execution Model Matters

Message history is about as sensitive as personal data gets, and the obvious implementation — upload the archive, index it in the cloud, query it there — would have been a hard sell. OpenAI instead drives the Messages app through AppleScript and macOS Accessibility, the same automation surfaces that Mac power users have scripted for two decades.

That choice explains the feature's limits. It works only in the macOS desktop app on Apple Silicon, and it is unavailable from regular ChatGPT chats, the web, the mobile apps, the Codex CLI, and the IDE extension. Those are not arbitrary restrictions; they follow directly from a design where the automation runs on the machine that holds the data.

How the Send Confirmation Works

The default behavior is a two-part approval: ChatGPT shows the drafted message and the intended recipients, and waits. For an assistant that can write in your voice and address your contacts, an explicit confirmation step on both the content and the destination is the right default. Anyone deploying this in a work context should confirm that default stays on.

Where This Sits in the Assistant-With-Hands Trend

This is the latest instance of a pattern we have covered repeatedly this year: assistants gaining the ability to act inside applications people already use rather than asking them to move into a chat window. ChatGPT added restaurant booking through Yelp and Resy in August, ChatGPT Health pulled labs and medications into a private tab in July, and ChatGPT Work pushed agents into workplace tools.

Messages is a natural next surface because the useful operations are so mundane. Find the address someone sent last month. Summarize a forty-message group thread about weekend plans. Draft a polite decline. None of that requires frontier reasoning; it requires access, and access is exactly what a local plugin provides.

What to Check Before Turning It On

Three things are worth verifying. First, confirm you are on the Apple Silicon build of the desktop app — Intel Macs do not get the plugin. Second, review the macOS Accessibility and Automation permissions ChatGPT requests, since those grants are broad by nature. Third, leave the send-confirmation default in place unless you have a specific reason to change it.

More AI product coverage is collected in our artificial intelligence section.

Sources: 9to5Mac — August 20, 2026; Neowin — August 20, 2026; Cybernews — August 2026.