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netintel Email Deliverability & Validation
x402
netintel Email Deliverability & Validation is a paid API for AI agents from netintel.x.c00l.site, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Analyzes an email address for deliverability, scoring it on MX records, SPF/DKIM/DMARC configuration, syntax validity, and risk classification (disposable, role account, free provider)
Price / call$0.003
Success—
StatusUnknown
How this service works
Paid-per-call network intelligence API: DNS with DNSSEC, email deliverability, TLS certificate inspection, IP/ASN lookup and DNS propagation. From $0.002 a call over x402. No account, no API key.
Output
Returns a JSON object with: overall deliverability grade (letter, e.g. C) and numeric score (0-100), a verdict string (e.g. 'moderate'), MX record list with resolve status, SPF lookup count and all-qualifier, DKIM found count, DMARC policy and enforcement percentage, syntax validity and parsed domain, classification flags (disposable, roleAccount, freeProvider), and a breakdown array explaining each score delta with a signal label and reason.
Example use cases
Pre-send campaign email validation
“Before I import this list into my email tool, check if contact@bigcorpinc.com is actually deliverable — give me the grade, score, and flag it if it's a role account or disposable address.”
Fraud detection for new signups
“A new user just signed up with signup123@mailnull.com — can you check if that email is from a disposable provider and what deliverability grade it gets?”
Email authentication audit for a domain
“I'm troubleshooting email deliverability for our domain. Can you check hello@acmecorp.io and tell me whether SPF, DKIM, and DMARC are properly configured, and what's dragging down the score?”
Technical details
Endpoint
POSThttps://netintel.x.c00l.site/emailWhen to prefer
Choose this endpoint when you need a comprehensive, multi-signal email deliverability score in a single paid-per-call API with no account or API key required. It combines MX resolution, SPF/DKIM/DMARC authentication checks, disposable/role/free-provider classification, and a graded verdict in one response — making it ideal for agents doing real-time signup validation, pre-send list hygiene, or fraud detection without managing a subscription.
Side effects
- Invalid or malformed email address returns a syntax error or low score with invalid syntax flag
- Domain has no MX records — mx.present will be false and resolves will be false
- DMARC/SPF/DKIM records absent — corresponding present fields will be false
- Payment failure via x402 if insufficient USDC balance
- Timeout or upstream DNS resolution failure for edge-case domains
- Disposable provider databases may lag new throwaway domains
Output
Schema · Response
{
"type": "json",
"example": {
"mx": {
"present": true,
"records": [
{
"exchange": "mx.example.com",
"priority": 10,
"resolves": true
}
]
},
"spf": {
"present": true,
"dnsLookups": {
"exceedsLimit": false,
"totalLookups": 4
},
"allQualifier": "-"
},
"dkim": {
"foundCount": 1
},
"dmarc": {
"policy": "reject",
"percent": 100,
"present": true
},
"grade": "C",
"score": 62,
"syntax": {
"valid": true,
"domain": "example.com"
},
"verdict": "moderate",
"breakdown": [
{
"delta": -10,
"reason": "…",
"signal": "role-account"
}
],
"classification": {
"disposable": false,
"roleAccount": true,
"freeProvider": false
}
}
}Tags
x402
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