Mode B+
Protect the inbox you already have.
You don't have to move addresses, tell anyone to update their contacts, or give up your Gmail or iCloud account. Your mail keeps arriving at your@gmail.com — unknown senders simply have to pass through your Knock gate on the way in, and you keep replying from your own address.
1. Forward
Gmail or iCloud forwards incoming mail to your Knock alias.
2. Gate
Unknown senders are asked for a small refundable deposit. Known senders pass instantly.
3. Deliver
Everything that clears the gate lands back in the inbox you already use.
4. Reply
You answer from your own address, exactly as before.
What the setup does for you
- Walks you through Gmail's forwarding and filter screens (or iCloud's rules) with exact strings you can copy.
- Catches Google's forwarding-verification email automatically and shows you the code and confirmation link within seconds — you still click it yourself.
- Allowlists your own address, so your own mail is never challenged.
- Sends a test message and confirms the loop end to end.