Download LocalBulkSMS for macOS

LocalBulkSMS isn't distributed through the Mac App Store, so Gatekeeper flags it on first launch. This is normal and only needs to be done once.

1. 1
   Move to Applications & open

   Drag LocalBulkSMS into your /Applications folder, then double-click it to launch.

2. 2
   macOS blocks it — click Done

   A dialog says "Apple could not verify LocalBulkSMS is free of malware." Click Done. This is expected for apps outside the App Store — do not move it to Trash.

3. 3
   Open Privacy & Security settings

   Open the Apple menu → System Settings → Privacy & Security, then scroll down to the Security section.

4. 4
   Click "Open Anyway"

   You'll see: "LocalBulkSMS was blocked to protect your Mac." Click Open Anyway, then enter your Mac password or Touch ID when prompted.

5. 5
   You're in — this is a one-time step

   A final dialog confirms — click Open Anyway (or Open) once more. LocalBulkSMS will then launch normally every time after this.