{"uid":"cap_d1Pn-kFEPw1yWZkkeKCSL","slug":"preflight-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-018cf917","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-verify)","url":"https://preflight.agentdiet.dev/v1/email-verify?utm_source=zero.xyz","method":"POST","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_k0nCwA-ukf6rhNWMM1uxQ","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 verify whether john.doe@example.com is a real, deliverable email — check for valid syntax, working MX records, and whether it's from a disposable provider or a role account?","exampleUseCases":[{"title":"Sign-up fraud prevention","prompt":"Before I create an account for the user who just signed up with temp-inbox@guerrillamail.com, check if that email is from a disposable or burner provider so I can decide whether to block them."},{"title":"B2B lead email validation","prompt":"I have a sales lead with the email ceo@acmecorp.io — can you verify it's syntactically valid, has live MX records, and has SPF and DMARC set up before I add it to our outreach campaign?"},{"title":"Role account detection for personalization","prompt":"We're about to send a personalized email to support@bigclient.com — can you tell me if that's a role account rather than a real person so I can adjust the messaging accordingly?"}],"resultDescription":"Returns a structured object indicating: email syntax validity, whether the domain uses a known disposable/burner email provider, whether the address is a role account (e.g. info@, admin@), live DNS MX record presence and details, SPF record existence and content, and DMARC policy record existence and content — giving a complete deliverability and risk profile for the address.","failureModes":["Invalid or missing email field returns a 400 error","Non-existent domain with no DNS records may return MX not found","Temporary DNS lookup failures may produce inconclusive results","Rate limiting or payment failure via x402 returns 402 Payment Required","Malformed email with valid-looking syntax may pass syntax check but fail MX lookup"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, live DNS-backed email verification that goes beyond simple syntax checking — specifically when you need to detect disposable/burner addresses, role accounts, and verify SPF/DMARC policies in a single call. Prefer it over basic regex validators when onboarding users, validating sales leads, or screening email lists for deliverability risk. It is especially useful in agent workflows that require fraud prevention or CRM data quality enforcement.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:32:31.793Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-2fe18696"}