{"uid":"cap_RUPgujKquilNjECCDLTYs","slug":"api-strale-io-cb550b43","name":"Email Deliverability Checker","description":"Check email deliverability for a domain: SPF, DKIM, DMARC, MX records, blacklist status. Returns 0-100 score.","url":"https://api.strale.io/x402/email-deliverability-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string"}}},"responseSchema":{"spf":{"type":"object"},"dkim":{"type":"object"},"dmarc":{"type":"object"},"grade":{"type":"string"},"score":{"type":"number"},"blacklisted":{"type":"boolean"}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"domain":"example.com"}}},"response":{"spf":{"valid":true,"exists":true,"record":"v=spf1 -all","mechanism":"-all (hard fail)"},"dkim":{"detected":true,"selector_found":"google"},"_meta":{"payment":{"method":"x402","price_usd":0.054000000000000006,"settlement_id":"0x31543a250ecc4b1144740e6369477440e1fb97677b7d8af2f45967417bc3dc35"},"capability":"email-deliverability-check","latency_ms":35,"provenance":{"source":"dns-analysis","fetched_at":"2026-06-05T23:36:03.357Z"}},"dmarc":{"exists":true,"policy":"reject","record":"v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s"},"grade":"A","score":100,"domain":"example.com","issues":[],"mx_records":[{"exchange":"","priority":0}],"blacklisted":false,"recommendations":[],"blacklists_checked":[{"name":"zen.spamhaus.org","listed":false},{"name":"bl.spamcop.net","listed":false},{"name":"b.barracudacentral.org","listed":false}]}},"exampleRequest":{"domain":"example.com"},"tags":["x402"],"displayCostAmount":"0.054001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.054001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3VsJhKI0Z4n6TA4a6V8r_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.054","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks email deliverability for a domain by validating SPF, DKIM, DMARC, MX records and blacklist status, returning a 0-100 deliverability score","exampleAgentPrompt":"Can you run a full email deliverability check on acme.com — I want to know the SPF, DKIM, DMARC, and MX record status, whether it's blacklisted, and the overall deliverability score?","exampleUseCases":null,"resultDescription":"Returns a 0-100 deliverability score along with the status of SPF, DKIM, DMARC, and MX DNS records, plus blacklist check results for the queried domain","failureModes":["Invalid or non-existent domain returns an error","Domain without any email records may return low score with missing record details","Network timeout if DNS lookups are slow","Malformed domain input may return 400 bad request"],"whenToPreferThis":"Use this endpoint when you need a comprehensive, scored audit of a domain's email deliverability posture including all major authentication records (SPF, DKIM, DMARC) and blacklist status in a single call, rather than checking individual DNS records manually","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T18:42:56.796Z","isFirstParty":false,"canonicalSlug":"api-strale-io-cb550b43"}