{"uid":"cap_1Ghg-kKdXvuSF0aINy9Vf","slug":"agent402-tools-email-deliverability-analyzer-433c01df","name":"agent402.tools Email Deliverability Analyzer","description":"End-to-end email-auth report for a domain: SPF + DMARC + DKIM (probes common selectors automatically) + MX records + score 0–100. The one call to make when 'why is our mail going to spam?' lands in your inbox.","url":"https://agent402.tools/api/email-deliverability?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","description":"Domain name (also accepts email/url/host)"},"dkimSelectors":{"type":"array","description":"Optional DKIM selectors to probe (overrides default list of 14 common selectors)"}}},"responseSchema":{"type":"json","example":{"mx":{"count":5,"records":["smtp.google.com"]},"spf":{"all":"softfail","valid":true,"hasRecord":true,"lookupCount":1},"dkim":{"found":[{"bits":2048,"valid":true,"selector":"20221208"}],"probed":["google","selector1","default","20221208"]},"dmarc":{"valid":true,"policy":"reject","percent":100,"hasRecord":true},"score":90,"checks":[{"check":"spf","detail":"SPF record present, 1 DNS lookup, ~all qualifier","status":"pass"},{"check":"dmarc","detail":"p=reject at 100% - strict enforcement","status":"pass"},{"check":"dkim","detail":"Found DKIM at selector 20221208 (2048-bit RSA)","status":"pass"},{"check":"mx","detail":"5 MX records configured","status":"pass"}],"domain":"google.com","summary":"good","queriedAt":"2026-06-19T20:00:00.000Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_deJmdgtuXzMlywLpS2Tr3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs a comprehensive email authentication audit for a domain — SPF, DMARC, DKIM (auto-probing 14 common selectors), and MX records — returning a 0–100 deliverability score.","exampleAgentPrompt":"Our emails from acmecorp.com keep landing in spam — can you run a full email deliverability audit on acmecorp.com, including SPF, DMARC, DKIM, and MX records, and give me the deliverability score?","exampleUseCases":null,"resultDescription":"Returns a structured report containing the domain's SPF record status, DMARC policy details, DKIM probe results across up to 14 common selectors, MX record information, and a composite deliverability score from 0 to 100 indicating overall email authentication health.","failureModes":["Domain does not exist or has no DNS records — returns empty results or error","Invalid domain/email format — validation error returned","DNS lookup timeout for slow or unresponsive nameservers","No DKIM selectors found if domain uses non-standard selectors not in the default list — caller should supply custom selectors via dkimSelectors parameter","Payment not included or invalid x402 payment — 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you need a single-call, all-in-one email authentication report covering SPF, DMARC, DKIM, and MX — especially when diagnosing spam delivery issues. Prefer this over manual DNS lookup tools when you want an automated score and don't want to check each record type separately.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:42:32.918Z","isFirstParty":false,"canonicalSlug":"agent402-tools-email-deliverability-analyzer-433c01df"}