agentinbox.md, such as [email protected]. People reply by email. Approvals arrive as emails with buttons. You can also answer a question by replying to that email.
setup registers your email address. Add it later, or skip the prompt:
Before you claim
A keyless inbox can receive email. It does not send email until you claim the setup. Sending or inviting on email exits1:
A new address
Put an email address in--to or in MCP to. A contact who has it is used. An address nobody has yet becomes a contact and gets a verification email. The message is not delivered. They click Verify this email. Send again after that.
--via email and --email. The contact id is taken from the address.