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Last active October 13, 2025 19:32
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Enable iMessage (Messages) Subject Field in macOS Big Sur through Sonoma
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macos-messages-subject-field.md

Want the Subject field (for bold iMessages) in macOS’ Messages app?

  1. Quit Messages
  2. Open Terminal
  3. Run defaults write com.apple.MobileSMS MMSShowSubject 1
  4. Start Messages

This worked for me on a fresh install of macOS 14.1.1 (23B81) (new Mac mini).

Note: On modern versions of macOS, you must enable Privacy & Security > Full Disk Access for your Terminal app in System Settings.

@Eabusham2
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Eabusham2 commented Sep 14, 2025

it works by going to privacy & security then go to full disk access and enable it for terminal. the only thing i dont like about enabling this is that the voice recording button is in middle and not in line soo it looks verry weird

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