{"uid":"cap_7vH663laoRaBCnDhsDojH","slug":"polymarket-odds-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-0e9be7f1","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://polymarket-odds.agentdiet.dev/v1/mx-check)","url":"https://polymarket-odds.agentdiet.dev/v1/mx-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_6J856OIO78JITl4AUoktb","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"polymarket-odds.agentdiet.dev","brandSlug":"polymarket-odds-agentdiet-dev-mpp","brandBaseUrl":"https://polymarket-odds.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 verification.","exampleAgentPrompt":"Can you check whether john.smith@acme-corp.com is a real, deliverable email — specifically verify its MX records, SPF, DMARC, and whether it looks like a disposable or role account?","exampleUseCases":[{"title":"Lead quality screening before outreach","prompt":"Before we add these leads to our sales sequence, check whether contact@startupxyz.io is a legitimate deliverable email — I want to know if the domain has MX records set up and whether it's a role account or disposable address."},{"title":"User registration fraud prevention","prompt":"Someone just signed up with temp-user@guerrillamail.com — can you verify if that's a disposable or burner email so we can decide whether to block the registration?"},{"title":"Email infrastructure audit for a partner domain","prompt":"We're about to partner with a company whose main contact uses ceo@bigpartner.net — can you check if that domain has valid MX, SPF, and DMARC records configured so we know their email infrastructure is legit?"}],"resultDescription":"Returns a structured object indicating whether the email passes syntax checks, whether the domain uses a known disposable/burner provider, whether the address is a role account (e.g. info@, support@), and the live DNS lookup results for MX, SPF, and DMARC records — enabling a full deliverability and fraud-risk assessment.","failureModes":["Missing or invalid email parameter returns a validation error","DNS lookup timeout if the target domain's nameservers are slow or unresponsive","Domain does not exist — MX/SPF/DMARC checks return empty or NXDOMAIN","Payment failure via x402 if USDC balance is insufficient","Rate limiting if too many requests are sent in a short window","Ambiguous results for newly registered domains with incomplete DNS propagation"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive single-call email verification covering syntax, DNS infrastructure (MX, SPF, DMARC), disposable provider detection, and role account flagging — especially in B2B lead qualification, fraud prevention at signup, or CRM data hygiene workflows. Prefer this over simple regex validators when live DNS verification and deliverability signals are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:00.500Z","isFirstParty":false,"canonicalSlug":"polymarket-odds-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-8c3833a0"}