{"uid":"cap_q7VF7D2Rs7R0ldWe4KJGj","slug":"datakoot-email-deliverability-checker-f95ba94f","name":"Datakoot Email Deliverability Checker","description":"48 live public-data tools (security, packages, SEC filings, economy, FX, weather, domains, Federal Register, Base) for AI agents. $0.002 USDC per call on Base via x402, charged only on success. The same tools are free for 100 calls/day via MCP at <server>.datakoot.com/mcp.","url":"https://x402.datakoot.com/api/email_deliverability?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain_or_email":{"type":"string","description":"A domain (stripe.com) or an email address (a@stripe.com)"}}},"responseSchema":{"type":"json","example":{"spf":"v=spf1 include:_spf.google.com ~all","domain":"google.com","mx_hosts":["smtp.google.com."],"spf_checked":true,"dmarc_policy":"reject","dmarc_record":"v=DMARC1; p=reject; rua=mailto:mailauth-reports@google.com","dmarc_checked":true,"can_receive_mail":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/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_ZcRemz9lZGO4iMTX362LK","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":"Checks email deliverability for a domain or email address by looking up SPF, DMARC, and MX records to determine if mail can be received","exampleAgentPrompt":"Can you check whether stripe.com has SPF and DMARC properly configured and whether it can actually receive email?","exampleUseCases":[{"title":"Pre-send deliverability audit","prompt":"Before I start this email campaign, can you check if hubspot.com has valid SPF and DMARC records set up and whether it can actually receive mail?"},{"title":"Verify a suspicious email sender","prompt":"I got an email from someone at protonmail.com — can you check if that domain has MX records and a DMARC reject policy so I know it's a real mail-receiving domain?"},{"title":"Debug bounced outbound emails","prompt":"Emails I send to addresses at acme-corp.io keep bouncing — can you look up the MX hosts, SPF record, and DMARC config for acme-corp.io to see what's wrong?"}],"resultDescription":"Returns a JSON object containing the domain name, SPF record string and whether it was successfully checked, DMARC record string and policy (e.g. 'reject', 'quarantine', 'none') and whether it was checked, a list of MX host addresses, and a boolean indicating whether the domain can receive mail.","failureModes":["Domain does not exist or has no DNS records — may return empty fields or can_receive_mail: false","Invalid input format (neither a valid domain nor email address) — likely returns a 4xx validation error","DNS lookup timeout for a slow or unresponsive nameserver — may result in partial or failed response","Private or internal domains with no public DNS records will not resolve"],"whenToPreferThis":"Choose this endpoint when you need a quick, structured lookup of email infrastructure records (SPF, DMARC, MX) for a given domain or email address — especially useful for pre-send deliverability checks, fraud detection, or diagnosing email bounce issues. At $0.002 per call it is cost-effective for on-demand single lookups; for high-volume or batch use consider the free MCP tier (100 calls/day).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:46:31.731Z","isFirstParty":false,"canonicalSlug":"datakoot-email-deliverability-checker-f95ba94f"}