{"uid":"cap__oKsbgZye4AsR9Gz5kNO9","slug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-2637093e","name":"B2A Email Deliverability, MX, SPF & DMARC Verifier","description":"Validates email syntax, disposable/burner provider status, role accounts, and live DNS MX/SPF/DMARC records. (Live x402 v2, IETF MPP & MCP endpoint at https://domain-osint.agentdiet.dev/v1/email-check)","url":"https://domain-osint.agentdiet.dev/v1/email-check?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["email"],"properties":{"email":{"type":"string","minLength":1,"description":"Email address to validate for syntax, MX deliverability, and disposable risk"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.005","displayCostAsset":"USD","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":"$0.005/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Z9q4u7MW9PSk5sfK-Rwmu","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"domain-osint.agentdiet.dev","brandSlug":"domain-osint-agentdiet-dev-mpp","brandBaseUrl":"https://domain-osint.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX, SPF, and DMARC record health.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it passes syntax checks, isn't from a disposable provider, and has valid MX, SPF, and DMARC records?","exampleUseCases":[{"title":"Screening signups for throwaway emails","prompt":"Before I add this user to our database, check if the email they submitted — tempuser123@mailnator.com — is a disposable or burner address with real DNS records, or just a throwaway."},{"title":"Lead list deliverability audit","prompt":"I have a prospect email, cto@bigcorp.io — can you verify it's syntactically valid, not a role account, and that the domain has proper MX and DMARC records so I know it's safe to cold outreach?"},{"title":"Email infrastructure health check","prompt":"Can you tell me if the domain behind noreply@startup.dev has SPF and DMARC set up correctly, and whether the MX records look healthy for actual mail delivery?"}],"resultDescription":"Returns a structured object indicating whether the email address is syntactically valid, whether the domain is associated with a known disposable/burner provider, whether it is a role-based address (e.g. admin@, info@), and live DNS lookup results for MX records (confirming mail servers exist), SPF records (sender policy), and DMARC records (anti-spoofing policy).","failureModes":["Missing or malformed email parameter returns a 400-level error","DNS lookup timeouts for domains with slow or unresponsive nameservers may cause delays or incomplete results","Disposable provider detection depends on a maintained blocklist and may miss newly created throwaway services","Payment failure or missing x402 credentials returns a 402 Payment Required response","Very new domains may have no MX/SPF/DMARC records yet, returning false negatives on deliverability"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, live email validation that goes beyond syntax checking — specifically when you need real-time DNS MX, SPF, and DMARC verification combined with disposable provider and role account detection in a single API call. It is ideal for lead enrichment pipelines, user registration screening, and email deliverability auditing where you need actionable signals rather than just format validation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:41:56.057Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-78659ee3"}