Webhook and inbox

Meta sends delivery statuses and customers' replies to a webhook: a public HTTPS address. Ultra WhatsApp has a built-in webhook receiver on your computer; a secure tunnel (for example a free Cloudflare quick tunnel or ngrok) gives it a public address.

1. In Ultra WhatsApp open Settings, Webhook & replies, and click Start receiver (port 8089 by default).
2. Run cloudflared tunnel --url http://localhost:8089 (or ngrok http 8089) and paste the https address it prints into Your public URL.
3. In your Meta app (WhatsApp, Configuration, Webhook, Edit) enter the Callback URL the app shows (your address + /webhook) and the same Verify token, and click Verify and save.
4. Subscribe to the messages field. Paste your Meta App Secret into the app so posts without Meta's signature are rejected, then click Self-test.
5. Replies now appear in the Inbox, with the time left in each 24-hour window, and you can answer inside it.

For 360dialog and Gupshup, set the same …/webhook address as the callback URL in the provider's dashboard; for Twilio use the …/twilio address. Vonage, Sinch, Telnyx, CM.com, Interakt, Kaleyra, Route Mobile, Unifonic and D7 Networks can send delivery statuses to a separate address that the app shows when you connect that provider. Replies from those providers stay in their own dashboards.