FAQ
An internet calling app where your email is your phone number. Free, no downloads required. Works in any modern browser.
No. Anyone can answer a knock from the email link — no account needed. Only the person initiating the call needs to sign in.
Yes. Knock Knock is free. Call anyone, anywhere, with no subscription or payment required.
Any device with a modern browser — Chrome, Firefox, Edge. Safari on iOS has WebRTC limitations we are working to fix with a dedicated Knock Browser.
Sign in and your door link is shown on your home page. Share it with anyone — they can knock you directly from that link without needing an account.
Yes. Your call history is available on your dashboard after signing in.
Go to Settings and close your door. Your door page will show "closed" to visitors. You can reopen it any time.
Only if you share your door link. Your email is never listed publicly without your consent.
No. Call audio is transmitted peer-to-peer via LiveKit WebRTC and is not recorded or stored by us.
Still have questions? Contact us