{"uid":"cap_4E3r63ODL-b44i90x_a0j","slug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-5bbc8bfc","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/email-validator)","url":"https://defi-yield.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_CH5abPQ3dkK99RldPhEpN","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 detection, role account flags, and live DNS checks (MX, SPF, DMARC) to confirm deliverability.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — specifically whether it passes syntax checks, isn't a disposable/burner address, and has valid MX, SPF, and DMARC records on the domain?","exampleUseCases":[{"title":"Screening sign-ups for burner emails","prompt":"Before I let this user register, can you verify that their email signup@tempmail.io isn't a disposable or throwaway address, and that it actually has working MX records so we can reach them?"},{"title":"Pre-send deliverability check for outreach","prompt":"I'm about to send a cold email to cto@bigcorp.com — can you confirm the address is syntactically valid, not a role account, and that the domain has proper MX and SPF records so my message won't bounce or get flagged?"},{"title":"Email hygiene audit for a CRM contact","prompt":"Can you run a full deliverability check on marketing@somenewdomain.co — I want to know if the syntax is good, whether it's a role account, and whether the domain has MX, SPF, and DMARC set up correctly?"}],"resultDescription":"Returns a structured object indicating whether the email passes syntax validation, whether the domain is from a known disposable/burner provider, whether the address is a role account (e.g. admin@, noreply@), and the live DNS status of MX, SPF, and DMARC records for the email's domain — giving a comprehensive deliverability verdict.","failureModes":["Missing or empty email parameter returns a validation error","Malformed email string may cause syntax-fail result without DNS lookup","DNS lookup timeout for obscure or newly registered domains may result in inconclusive MX/SPF/DMARC status","Rate limiting or payment failure (x402) returns a 402 response requiring payment","Domain exists but has no MX records — correctly flagged as undeliverable"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email validation that goes beyond simple regex — specifically when you want live DNS MX/SPF/DMARC checks combined with disposable-provider detection and role-account flagging in a single call. It is ideal for pre-send deliverability checks, onboarding form validation, or CRM hygiene tasks where false positives (accepting bad emails) are costly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:13.113Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2981faaf"}