MACHINE-READABLE EMAIL-DOMAIN DNS • REAL X402 V2 QUOTE
A public DNS report, not another account.
Does the domain publish mail exchangers (MX), an SPF authorization policy and a DMARC policy? Check the public DNS records for one domain. See a free invented sample first, then optionally request one real merchant price quote and approve a 0.005 native Circle Base USDC one-time payment from your own compatible wallet.
Free public DNS overview
0 USDCReal MX/SPF/DMARC domain summary via Google DNS, plus a fictional example. No wallet.Optional report
0.005 USDCBuyer-approved x402 payment, Base mainnetYour chosen public domain goes to Google Public DNS only when you click the separate free REAL DNS preview, or to the original VM5 merchant when you request a paid price quote. No email address, mailbox credentials, CSV, messages or customer records are needed. An unsigned HTTP 402 price is not a customer sale or a paid API response.
FREE • ZERO NETWORK REQUESTS
Inspect the example response first
The fictional example.org record below is fabricated solely to illustrate output format. It is not a live DNS observation and does not imply that a mailbox or delivery route works.
OPTIONAL • NO WALLET FOR QUOTE
Request a domain-specific 402 quote
Enter just one public DNS hostname, such as example.com. Email addresses, URL paths, local network names, IP addresses and customer records are rejected. A bounded public DNS check happens before a payable 402 quote; a failed query may return HTTP 400, 404, 429 or 503 with no charge.
Free live public DNS preview: You may explicitly request three DNS-over-HTTPS GETs (MX, TXT/SPF, _dmarc TXT) for the one public domain you entered through independent Google Public DNS. That third-party resolver receives your chosen domain and normal browser request metadata. Never enter a private customer hostname. VM5 does not receive these free queries. It is public DNS configuration only, NOT real mail delivery, an inbox test or full SPF/DMARC/DKIM validation. No wallet, fee or subscription.
Did that real DNS preview help?
To improve the tool based on genuine user needs, tell us which public MX/SPF/DMARC detail is missing or which confusing result you need explained. Feedback is optional, not an order or payment. Do not share client identities, login secrets, private account logs, email addresses, proprietary domains, wallet addresses or customer records.
Google and GitHub host these external forms and may ask you to sign in or collect ordinary account metadata. Neither response is a purchase, paid contract or independent security verification.
Check everything before opening a wallet. The exact quote is checked against the original VM5 merchant, Base 8453, canonical Circle USDC, 5000 atomic units, fixed recipient, approved transfer scheme, and exact requested domain.
The price quote alone does not check live settlement, credit a seller, or validate a buyer's ability to pay. The buyer must check the destination carefully. A good-looking token address is not a merchant endorsement.
HOW THE OPTIONAL PAYMENT WORKS
Nothing is signed automatically.
Local free invented example: no network, wallet or actual DNS information.
Check one real GET /v1/email-dns-preflight?domain=... unsigned 402: only public domain and no PAYMENT-SIGNATURE. Verify the exact 5000-unit Base USDC terms.
If you expressly consent, your own EIP-1193 wallet may sign ONE expiring EIP-3009 TransferWithAuthorization, not an unlimited ERC-20 approve. The client sends the signed request once.
Only a paid HTTP 200 with matching structured report is displayed as a delivered result. An uncertain response could still have settled: never auto-retry or re-sign until independent chain reconciliation.
WHAT THIS CANNOT PROMISE
DNS configuration ≠ delivered email.
No user mailbox is accessed. This does not verify individual email addresses, SPF/DKIM alignment on a specific message, SMTP responses, spam placement, sender consent, inbox replies, DNS control or business identity. We do not send messages, inspect customer devices, or use buyer wallet seeds.
DNS is a changing external source. The opt-in FREE DNS report queries Google Public DNS directly from your browser; a separately chosen paid 0.005-USDC JSON report contacts our original Render seller API. Neither verifies mailbox/SMTP. A returned technical configuration report is not proof the mail system works and is not a security/compliance certification. The hosted server sees the public DNS domain for the paid query. Payment requires wallet-held authentic native Circle Base USDC on Base and a compatible EIP-712 signature method.
Read the free public-domain technical guide ↗, merchant OpenAPI specification ↗, or report a real, nonconfidential usage problem ↗.
Original AI-assisted VM5 Delivery Lab, one human beneficial owner. The live unsigned 402 and fictional example were tested; live independent human BUYER-SIGNED purchase plus delivery for this DNS SKU was NOT tested or confirmed. Existing historical seller receipts belong to other products and are not attributed here. No income guarantee or self-generated test purchase.