{"uid":"cap_ugykVnDA5nDSqL6tiGroy","slug":"x402broker-com-b2a-email-deliverability-mx-spf-dmarc-verifier-26fb0c1c","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/spf-dmarc-auditor)","url":"https://x402broker.com/v1/spf-dmarc-auditor?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_-SxYPPlpGZV8f0M56809w","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/DMARC record checks to assess deliverability.","exampleAgentPrompt":"Can you check whether john.doe@techcorp.io is a real, deliverable email — I want to know if the domain has valid MX records, whether SPF and DMARC are configured, and if it looks like a disposable or role address?","exampleUseCases":[{"title":"Screening signups for fake emails","prompt":"Before I add this new user to my CRM, can you verify whether signup@mailinator.com is a real deliverable address or a throwaway burner account?"},{"title":"Auditing B2B lead email quality","prompt":"I have a sales lead with the email cfo@globalventures.com — can you check if that domain has working MX records and proper SPF and DMARC setup so I know whether outreach will actually land?"},{"title":"Blocking role accounts from newsletter","prompt":"Check if info@acmecorp.org is a role-based email address — I don't want to send my newsletter to generic inboxes like info@ or support@ that no one reads."}],"resultDescription":"Returns a structured JSON object indicating whether the email has valid syntax, whether the domain belongs to a known disposable or burner provider, whether it is a role account, and the live DNS lookup results for MX records (mail server availability), SPF record presence and validity, and DMARC policy configuration — giving a comprehensive deliverability and trustworthiness assessment.","failureModes":["Missing or invalid email parameter returns a validation error","Temporarily unresolvable DNS for a legitimate domain may produce false negatives on MX/SPF/DMARC checks","Edge-case disposable providers not in blocklist may pass as valid","Network timeouts on DNS lookups may cause incomplete results","Malformed email strings may return syntax failure without further DNS checks"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple regex syntax checking — specifically when you need live DNS MX/SPF/DMARC verification combined with disposable provider and role account detection in a single API call. Prefer this over basic syntax validators when lead quality, email deliverability, or fraud prevention matters, such as during user registration, CRM enrichment, or outbound sales campaigns.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:13.431Z","isFirstParty":false,"canonicalSlug":"b2a-email-deliverability-mx-spf-dmarc-verifier-aed51451"}