{"uid":"cap_a62TBg9C__tFC0CE8eECt","slug":"preflight-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-afdc4df3","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://preflight.agentdiet.dev/v1/email)","url":"https://preflight.agentdiet.dev/v1/email?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_o8KgP5oAwcD-a_yy7iuIG","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"preflight.agentdiet.dev","brandSlug":"preflight-agentdiet-dev-mpp","brandBaseUrl":"https://preflight.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 if john.doe@tempmail.com is a real, deliverable email address — specifically whether it's from a disposable provider, has valid MX records, and has SPF and DMARC configured on the domain?","exampleUseCases":[{"title":"Screen signups for throwaway emails","prompt":"We're getting a lot of fake signups — can you check whether the email address user123@guerrillamail.com is from a disposable or burner provider, and whether it's actually deliverable?"},{"title":"Pre-send deliverability audit for outreach","prompt":"Before I send this sales sequence to contact@acme.io, can you verify the email is real — check if the domain has MX records and proper SPF and DMARC settings so my emails won't bounce?"},{"title":"Detect role accounts in a lead list","prompt":"I want to qualify a lead — can you tell me if support@bigcorp.com is a role-based email address rather than a real person's inbox, and whether the domain is properly set up for receiving mail?"}],"resultDescription":"Returns a structured object indicating whether the email passed syntax validation, whether the domain belongs to a known disposable/burner provider, whether the address appears to be a role account (e.g. info@, admin@), and the live DNS status of MX, SPF, and DMARC records for the email's domain.","failureModes":["Missing or malformed email parameter returns a validation error","DNS lookup timeouts may cause MX/SPF/DMARC checks to be inconclusive","Newly registered domains may have no DNS records yet, resulting in undeliverable status","Payment failure (HTTP 402) if the x402 micropayment is not properly handled","Some disposable provider lists may lag behind newly created burner domains"],"whenToPreferThis":"Choose this endpoint when you need a real-time, multi-signal email validation that goes beyond basic syntax — specifically when you need live DNS MX/SPF/DMARC checks combined with disposable provider detection and role account flagging in a single call. Ideal for lead enrichment pipelines, signup fraud prevention, and pre-send deliverability audits where bounce prevention and data quality matter. Prefer this over static regex validators or simple format checkers when you need authoritative DNS-level confirmation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:41.336Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2fe18696"}