{"uid":"cap_UIldZZZdud8gW5U5eM3bJ","slug":"x402broker-com-b2a-email-deliverability-mx-spf-dmarc-verifier-9275157f","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://x402broker.com/v1/email)","url":"https://x402broker.com/v1/email?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_MQnfsDz4DGjwM7n3rFseA","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"x402broker.com","brandSlug":"x402broker-com-mpp","brandBaseUrl":"https://x402broker.com","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 checks.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email — specifically whether the domain has valid MX records, passes SPF and DMARC, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Screen sign-up email for fraud","prompt":"Before I create an account for this new user, can you verify that their email address signup123@tempmail.io isn't from a disposable or burner service and actually has working mail server records?"},{"title":"Pre-send deliverability check","prompt":"I'm about to send a contract to alice@partnercorp.com — can you confirm that email address is syntactically valid, not a role account, and that the domain has proper MX, SPF, and DMARC records set up?"},{"title":"B2B lead list email hygiene","prompt":"I have a lead email address contact@acmecorp.com — can you verify it's deliverable, check if their domain has MX and DMARC configured, and flag if it looks like a generic role account?"}],"resultDescription":"Returns a structured object indicating: whether the email syntax is valid, whether the provider is disposable or a burner service, whether the address is a role account (e.g. info@, admin@), and live DNS lookup results for MX records (mail server existence), SPF policy, and DMARC policy — giving an overall deliverability assessment.","failureModes":["Missing or malformed email parameter returns an error","DNS lookup timeout for domains with slow or unresponsive name servers","Newly created domains may lack MX/SPF/DMARC records causing false negatives","Disposable provider list may not include all newly created throwaway services","Payment failure via x402 protocol prevents endpoint access"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email verification that combines syntax checking, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC validation — especially useful for B2B lead enrichment, user registration fraud prevention, or pre-send deliverability assurance. Prefer it over basic syntax validators when live DNS verification is required, and over domain-only DNS tools when per-address disposable and role account screening matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:11.473Z","isFirstParty":false,"canonicalSlug":"b2a-email-deliverability-mx-spf-dmarc-verifier-aed51451"}