x402.professorsausages.com

https://x402.professorsausages.com/email-check/check

Shares a payout wallet with 106 other endpoints — its adoption is attributed from that shared wallet's traffic, not earned exclusively.

Email deliverability-signals check — RFC5322 syntax + live MX/SPF/DMARC (DoH) + disposable/role/free-provider/unicode flags. Signals, not an SMTP guarantee

29
reliability

Reliability & health

Uptime and response time from our own unpaid probes, plus the reliability score built from them.

Uptime

0.0% avg
0% 50% 100% Fri 8 PMSun 8 PMTue 8 PMThu 8 PM

Response time

0ms 50ms 100ms Fri 8 PMSun 8 PMTue 8 PMThu 8 PM
Data table
Reliability history per time bucket over the last 7 days (hourly).
Bucket Uptime Probes Response time
8/14/2026, 8:00:00 PM 0% 1
8/15/2026, 8:00:00 PM 0% 1
8/16/2026, 8:00:00 PM 0% 1
8/17/2026, 8:00:00 PM 0% 1
8/18/2026, 8:00:00 PM 0% 1
8/19/2026, 8:00:00 PM 0% 1
8/20/2026, 8:00:00 PM 0% 1
29
Composite reliability — the weighted average of the dimensions below, on a 0–100 scale.
Availability
7

How often it was reachable when we probed it (weight 35%).

Latency
not yet measured

How quickly it answers when it is up — fast scores high (weight 20%).

Security
100

Whether it serves over working TLS / https (weight 15%).

Transparency
61

Whether the operator disclosed what it does — description, schema, identity (weight 15%).

Activity
0

Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).

Confidence 60% — how much probe evidence backs this score. A thin history is flagged, not hidden.

See the scoring methodology for exactly how each number is computed.

Payment

Currencies
USDC
Networks
base
Facilitator
unknown
SDK
unknown

Operator

Company
inferred — unknown
Jurisdiction
Registrar
GoDaddy.com, LLC
Domain registered
2025-08-23
Hosting network
CLOUDFLARENET
Hosting country

Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.

On-chain activity (base)

33
payments (30d)
0.23
USD volume (30d)
11
paying wallets (30d)

Payments per day

last payment 8/18/2026
0 5 10 Jul 22Jul 29Aug 4Aug 18
Data table
Settled payments per day.
Day Payments Volume (USD) Paying wallets
7/22/2026 8 0.04 2
7/27/2026 10 0.04 2
7/28/2026 7 0.09 2
7/29/2026 2 0 1
7/30/2026 1 0.02 1
8/4/2026 2 0 1
8/13/2026 1 0.01 1
8/14/2026 1 0.01 1
8/18/2026 1 0.02 1

This payout wallet is shared: figures cover all 107 endpoints paid at it, since payments cannot be attributed to one of them. Only payments settled on chains and facilitators we index.

Linked by wallet — likely same operator

On-chain agent identity and the x402 endpoint that shares its settlement wallet.

Response schema
{
  "properties": {
    "checks_run": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "disclaimer": {
      "type": "string"
    },
    "domain": {
      "description": "Domain part (null when syntax invalid).",
      "type": [
        "string",
        "null"
      ]
    },
    "email": {
      "type": "string"
    },
    "evidence": {
      "items": {
        "properties": {
          "check": {
            "description": "Stable check id.",
            "type": "string"
          },
          "detail": {
            "type": "string"
          },
          "signal": {
            "description": "\"unknown\" means the check degraded (e.g. DoH outage) and did not produce a signal.",
            "enum": [
              "ok",
              "info",
              "warn",
              "critical",
              "unknown"
            ],
            "type": "string"
          }
        },
        "required": [
          "check",
          "signal",
          "detail"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "freshness": {
      "properties": {
        "as_of": {
          "description": "ISO-8601 timestamp of this live check.",
          "type": "string"
        },
        "max_age_seconds": {
          "enum": [
            0
          ],
          "type": "integer"
        },
        "tier": {
          "enum": [
            "live"
          ],
          "type": "string"
        }
      },
      "required": [
        "tier",
        "max_age_seconds",
        "as_of"
      ],
      "type": "object"
    },
    "has_plus_tag": {
      "type": "boolean"
    },
    "normalized_email": {
      "description": "Lowercased; gmail dots + plus-tag stripped.",
      "type": "string"
    },
    "not_checked": {
      "description": "smtp_handshake, mailbox_existence, reputation_feeds — plus any DoH-degraded checks.",
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "verdict": {
      "description": "Signals read, NOT a delivery guarantee. UNDELIVERABLE = syntax fail or no MX; RISKY = disposable, unicode-lookalike, or no SPF + no DMARC; else DELIVERABLE_SIGNALS_OK.",
      "enum": [
        "DELIVERABLE_SIGNALS_OK",
        "RISKY",
        "UNDELIVERABLE"
      ],
      "type": "string"
    }
  },
  "required": [
    "email",
    "normalized_email",
    "has_plus_tag",
    "domain",
    "verdict",
    "evidence",
    "checks_run",
    "not_checked",
    "disclaimer",
    "freshness"
  ],
  "type": "object"
}