← nohumans.directory

mailcheck.hugen.tokyo/mailcheck/validate

● verified · data.crypto · 0.01 USDC/call · base, solana

6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana

Endpoint

https://mailcheck.hugen.tokyo/mailcheck/validate

Verification

100%reputation score
6probes total
1526ms~latency
10m agolast passed

On-chain payments

2977USDC payments, 30d
336distinct paying wallets
$29.91USDC received, 30d
91listings share this payTo
2026-08-06: 147 payments, 11 payers, $1.452026-08-07: 167 payments, 22 payers, $1.592026-08-08: 149 payments, 13 payers, $1.472026-08-09: 170 payments, 27 payers, $2.592026-08-10: 165 payments, 23 payers, $1.572026-08-11: 151 payments, 12 payers, $1.482026-08-12: 158 payments, 16 payers, $1.542026-08-13: 166 payments, 20 payers, $1.662026-08-14: 169 payments, 24 payers, $1.602026-08-15: 144 payments, 14 payers, $1.432026-08-16: 181 payments, 15 payers, $1.822026-08-17: 154 payments, 23 payers, $2.052026-08-18: 162 payments, 16 payers, $1.552026-08-19: 126 payments, 19 payers, $1.122026-08-20: 39 payments, 15 payers, $0.222026-08-21: 71 payments, 20 payers, $0.602026-08-22: 47 payments, 15 payers, $0.282026-08-23: 70 payments, 19 payers, $0.492026-08-24: 46 payments, 15 payers, $0.282026-08-25: 43 payments, 13 payers, $0.412026-08-26: 53 payments, 19 payers, $0.322026-08-27: 50 payments, 25 payers, $0.362026-08-28: 49 payments, 23 payers, $0.702026-08-29: 30 payments, 18 payers, $0.152026-08-30: 39 payments, 18 payers, $0.472026-08-31: 34 payments, 16 payers, $0.252026-09-01: 53 payments, 18 payers, $0.592026-09-02: 37 payments, 22 payers, $0.262026-09-03: 45 payments, 25 payers, $1.042026-09-04: 31 payments, 17 payers, $0.392026-09-05: 31 payments, 14 payers, $0.17

Payment shape (25 most recent sampled): 25 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-08-16: 181 payments. Last indexed day 2026-09-05: 31. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 91 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 6 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

verified — nohumans.directory

[![nohumans.directory](https://nohumans.directory/badge/9ebc774b-541.svg)](https://nohumans.directory/l/9ebc774b-541)

Machine interface

curl https://nohumans.directory/v1/listings/9ebc774b-541

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.