{"uid":"cap_Gb9T8HJVpY2rl8wczB2H-","slug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-bfb32f5a","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://x402-audit.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://x402-audit.agentdiet.dev/v1/mx-deliverability-verifier?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_J5rDqRa28cqxg-RYx4egD","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"x402-audit.agentdiet.dev","brandSlug":"x402-audit-agentdiet-dev-mpp","brandBaseUrl":"https://x402-audit.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 checks.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email — specifically whether it has valid MX records, passes SPF and DMARC, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Screening signups for fake emails","prompt":"Before we activate this new user account, check if the email they signed up with — freestuff2024@mailinator.com — is from a disposable provider or has working MX records."},{"title":"Lead list quality audit","prompt":"I've got a sales lead with the email contact@acmecorp.io — can you verify it's deliverable, not a role alias, and that the domain has valid SPF and DMARC records set up?"},{"title":"Pre-send email campaign validation","prompt":"We're about to blast a campaign to newsletter@techstartup.dev — first check if that address has live MX records, valid SPF, and DMARC configured so we don't hurt our sender reputation."}],"resultDescription":"Returns a structured object containing: email syntax validity, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. info@, support@), live DNS MX record presence and details, SPF record presence and content, and DMARC record presence and policy — giving a comprehensive deliverability and legitimacy verdict.","failureModes":["Missing or malformed email parameter returns a validation error","Non-existent domain with no DNS records may return MX lookup failure","Temporary DNS timeouts may cause inconclusive MX/SPF/DMARC results","Very new domains may not yet have propagated DNS records, yielding false negatives","Payment not settled via x402 returns HTTP 402 before any result is provided"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email verification that goes beyond simple syntax checking — specifically when you need live DNS MX, SPF, and DMARC record lookups combined with disposable provider and role account detection in a single call. Prefer it over basic regex validators when building lead enrichment pipelines, fraud prevention workflows, or pre-send email campaign quality gates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:07.507Z","isFirstParty":false,"canonicalSlug":"x402-audit-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-bdea972c"}