one finite human door · as of 2026-08-31

Contact without capture.

A real inbound email lane for KINGDOM OS. The page has no form, script, account, tracking cookie, autoresponder, or message database.

Door state: ACTIVE · ACTIVE_API_VERIFIED

Operational verification: routing API and routing DNS verified: yes. Receive-only DMARC: NOT_YET_PUBLISHED. End-to-end inbox delivery proven: no. The current check stopped after SMTP envelope acceptance; no message DATA was sent and no destination-inbox receipt was observed.

Email contact@thekingdom.dev

Visiting sends nothing. Opening a mail link still sends nothing until you choose to send in your own mail client. Delivery is not identity, representation, consent, truth, relationship, diplomacy, mediation, or authority.

choose one purpose

Exact role addresses

general

general question · correction · invitation · accessibility feedback · privacy or data-rights request

Email contact@thekingdom.dev

contact@thekingdom.dev

Human-operated. No automatic reply and no response promise.

security

security vulnerability report

Email security@thekingdom.dev

security@thekingdom.dev

Human-operated. No automatic reply and no response promise.

Only these four named base addresses are routed. Catch-all delivery and +tag subaddressing are disabled; there is no Email Worker, form, autoresponder, or wildcard address. Cloudflare does not forward non-delivery reports to the original sender, so a forwarding failure can be silent. Use an independent confirmation path for consequential or time-sensitive matters.

minimum necessary

What to send

Useful

  • The exact route, file, statement, or accessibility barrier.
  • The kind of response you seek.
  • Your preferred language: English, Traditional Chinese, or Simplified Chinese.
  • A deliverable reply address only if you want a reply.

Do not send

  • Credentials, keys, recovery phrases, or bearer tokens.
  • Identity documents or highly sensitive personal records.
  • Third-party private data, malware, threats, or illegal instructions.
  • Anything that must meet an emergency, statutory, or court deadline.

No encryption route is offered in v0.1. Do not email secrets.

privacy and handling

Email uses providers

The site accepts no submission. If you email, the sender's provider, transit providers, Cloudflare Email Routing, the destination mailbox provider, and the operator may process addresses, headers, transport metadata, content, attachments, and correspondence history.

The data controller is Cambridge TCG Limited, company 15680297, registered at 60 Tottenham Court Road, Suite 4583a, Fitzrovia, London, United Kingdom, W1T 2EW. Read the public operator profile and controller privacy notice. Messages are used only to understand and, when chosen, answer the request; correct KINGDOM materials; handle accessibility, privacy, safety, security, abuse, and mail transport; or preserve proportionate necessary evidence.

No marketing, profiling, automated decision, public message archive, message-content publication, model training, or unrelated forwarding is added by this door. Minimal redacted event metadata may appear in CONTACT-LEDGER.md. Where required or reasonably necessary to protect people or systems, a bounded disclosure may be made only to an affected service, incident responder, professional adviser, insurer, court, regulator, law-enforcement or safeguarding body. Providers may filter spam or malware, but filtering is not guaranteed.

Ask through contact@thekingdom.dev for access, correction, deletion, restriction, objection, or a data-protection complaint. The stated UK bases are legitimate interests in receiving voluntary correspondence, correcting published material, and protecting services—with minimisation, short reviews, and a right to object—or a specific legal obligation when one actually applies. Ordinary correspondence has no response promise; Cambridge TCG Limited acknowledges a data-protection complaint within 30 days and normally answers an applicable rights request within one month, subject to lawful extensions. You may use the ICO complaint route without contacting Cambridge first. This page does not promise one universal transfer safeguard or compliance outside the stated controller scope.

vulnerability disclosure

Report safely; testing is not authorized

Email security@thekingdom.dev with the affected route, observed behavior, impact, and smallest safe reproduction. Minimise personal data. Do not access data that is not yours, degrade availability, persist access, exfiltrate content, or expand testing beyond what is necessary to describe the issue.

Publishing this address creates no safe harbor, testing permission, confidentiality promise, bounty, SLA, or remediation deadline. For machine discovery, read /.well-known/security.txt.

four boundaries

Choose → send → deliver → receive

The visitor chooses, a local mail client sends, providers deliver, and one human inbox may receive. Delivery is not identity, representation, consent, or authority.

A reply is manual and not promised. Because the alias is receive-only, a reply may come from a different Cambridge TCG mailbox address. Verify any consequential claim independently. Silence is not consent, hostility, or permission to retry.

inspect and download

Public contract and assets

bounded source horizon

Standards and guidance

Links are design inputs, not imported authority, applicability findings, currentness guarantees, or compliance certificates.