{"uid":"cap_EzDx1vAgl9RdQKSnEe_JG","slug":"netintel-email-deliverability-validation-49047e27","name":"netintel Email Deliverability & Validation","description":"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.","url":"https://netintel.x.c00l.site/email","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"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}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_PbpqgILm_efDtqelHfsVF","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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)","exampleAgentPrompt":"Check the deliverability of user@example.com — I want to know its overall grade and score, whether MX records resolve, and if it looks like a disposable or role-based address.","exampleUseCases":[{"title":"Pre-send campaign email validation","prompt":"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."},{"title":"Fraud detection for new signups","prompt":"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?"},{"title":"Email authentication audit for a domain","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:36:20.057Z","isFirstParty":false}