{"uid":"cap_9oj3QqS3-K5tlCsdQNEmt","slug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-13a7f429","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://onchain-risk.agentdiet.dev/v1/email-validator)","url":"https://onchain-risk.agentdiet.dev/v1/email-validator?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_b9h9bzmddaNXklzao-7qn","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"onchain-risk.agentdiet.dev","brandSlug":"onchain-risk-agentdiet-dev-mpp","brandBaseUrl":"https://onchain-risk.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role-based account detection, and live DNS MX/SPF/DMARC record checks to assess deliverability.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it has valid MX records, isn't a disposable burner account, and has SPF and DMARC set up on its domain?","exampleUseCases":[{"title":"Pre-send lead list email scrub","prompt":"Before I import these leads into my CRM, check if contact@leads-company.io is a legitimate deliverable email — I need to know if it's a role account, whether the domain has MX records, and if it's from a disposable provider."},{"title":"Sign-up fraud prevention check","prompt":"A new user just registered with the email temp4567@mailnesia.com — can you tell me if it's a disposable or burner address so I can decide whether to block the signup?"},{"title":"Cold outreach domain health audit","prompt":"I'm about to send a cold email campaign to prospects at acme-corp.com — can you verify that info@acme-corp.com has valid MX records and that the domain has SPF and DMARC policies configured so my emails won't bounce?"}],"resultDescription":"Returns a structured object indicating whether the email has valid syntax, whether the domain belongs to a known disposable/burner provider, whether it is a role-based account (e.g. info@, admin@), and the live DNS status of MX, SPF, and DMARC records for the email's domain — together giving a composite deliverability assessment.","failureModes":["Missing or malformed email parameter returns a validation error","DNS timeout may cause MX/SPF/DMARC lookups to fail for slow-responding domains","Unknown or very new domains may return empty DNS records even if legitimate","Disposable provider detection relies on a maintained blocklist that may lag new burner services","Payment failure (HTTP 402) if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive single-call email check that covers syntax, DNS deliverability (MX), email authentication policies (SPF/DMARC), disposable provider detection, and role account flagging — rather than a simple regex or single-factor validator. Especially useful for lead enrichment pipelines, signup fraud prevention, and pre-campaign list hygiene where live DNS resolution accuracy matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:44.740Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-fcf933df"}