Voidmail for agents
Mailbox owner console.
See and decide what your agent's mailbox may send. This page keeps your owner key in memory only, sends it only to the Voidly API, and forgets it when you leave or reload. A browser extension that can read this page can read the key too.
Open a mailbox
My mailbox has no owner key
A mailbox created without an owner key (before owner keys existed, by @voidly/mcp-email 1.1.0 or earlier, or by an API create that did not ask for one) can get one once. Call POST /v1/agent-mail/owner/bootstrap with the agent key in X-Agent-Mail-Key. That returns the owner key and switches the mailbox to approved recipients only with credential blocking. The agent key cannot undo it. It works only if the mailbox was never restricted with the agent key, and whoever calls it first gets the owner key, so do it before the agent can.
Do this yourself, not through the agent: the owner key must never pass through a model.