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For X and LinkedIn, you need Chrome on a desktop, signed in to the accounts you want to connect. For WhatsApp, you only need your phone to scan a QR code.
  1. Create an account at inboxapp.com.
  2. Follow the setup steps. To link X or LinkedIn, install the Chrome extension when asked; Inboxapp detects it automatically.
  3. Pick the accounts to link. For WhatsApp, click Link and scan the QR code. Your DMs start syncing right away.
Extension not detected? See Chrome extension troubleshooting. Next: Connect AI tools.