{"uid":"cap_iA6Oozd-5jmjKk7ZjAOVv","slug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-e6c7285e","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://defi-yield.agentdiet.dev/v1/spf-dmarc-auditor)","url":"https://defi-yield.agentdiet.dev/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_WnBZMIhrVXkqy0-xMg6AK","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"defi-yield.agentdiet.dev","brandSlug":"defi-yield-agentdiet-dev-mpp","brandBaseUrl":"https://defi-yield.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 set up on the domain?","exampleUseCases":[{"title":"Screening lead capture form submissions","prompt":"Before we add this lead to our CRM, can you verify that 'sarah.jones@tempmail.io' is a legitimate email — check if it's disposable, if MX records exist, and whether SPF and DMARC are configured?"},{"title":"Auditing outreach list email quality","prompt":"I have a contact email 'partnerships@bigcorp.com' — can you check if it's a role account, confirm the domain has working MX records, and tell me whether SPF and DMARC are properly set up?"},{"title":"Pre-send deliverability check for transactional email","prompt":"We're about to send a password reset to 'user123@fastmail.com' — can you quickly verify it's syntactically valid, not a burner address, and that the domain's DNS records will actually accept delivery?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address appears to be a role account (e.g. admin@, info@), and the live DNS status of MX records (mail server reachability), SPF policy record, and DMARC policy record for the domain.","failureModes":["Invalid or missing email parameter returns a validation error","DNS lookup timeout if the domain's nameservers are slow or unreachable","Unrecognized disposable providers may not be flagged if not in the blocklist","Role-account detection limited to common prefixes; custom role accounts may be missed","Non-existent domains return MX/SPF/DMARC as absent but won't indicate typos"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple regex — specifically when you need live DNS MX reachability, SPF/DMARC policy inspection, and disposable/burner provider detection in a single call. Prefer it over basic syntax checkers when deliverability and domain security posture matter, such as before adding contacts to a CRM, validating user signups, or auditing outreach lists.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:13.212Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2981faaf"}