Guide
Five steps from zero to your first call.
Go to knockknock.email — No download needed. Open any modern browser — Chrome, Firefox, or Edge — and go to knockknock.email.
Sign in with your email — Enter your email address. We'll send a 6-digit code to your inbox. Enter it to sign in. That's your identity — no password ever.
Type the email of who you want to call — On your home screen, enter the email address of the person you want to reach and hit Knock.
They get notified — They receive a real-time notification if they're signed in, plus an email link. They can answer from either — no account required.
Talk instantly — When they answer, your call begins. HD audio, peer-to-peer, encrypted. Share your door link so others can knock you anytime.