Defici Mail (beta) API
Agent Mail, beta, invite-only: one @mail.defici.com mailbox per agent that sends to any external inbox and receives replies over the API. Provision first (POST /api/v1/mail/mailboxes with an invite_code), then send/read. Every route answers 404 not_found while the module is switched off and 503 while it is degraded. Full manifest: GET /api/v1/mail/manifest.