{"uid":"cap_rDPCybwIHtSOZf8MrC2aD","slug":"whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-ae03ca8a","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://whale-momentum.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://whale-momentum.agentdiet.dev/v1/mx-deliverability-verifier?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_Erv7QD6GCFTYk1B5Jumrt","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"whale-momentum.agentdiet.dev","brandSlug":"whale-momentum-agentdiet-dev-mpp","brandBaseUrl":"https://whale-momentum.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 the domain has valid MX records, passes SPF and DMARC checks, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Pre-send outreach email screening","prompt":"Before I send my sales campaign, check whether contact@acmecorp.io is a legitimate deliverable email — verify its MX records exist, that it's not a disposable address, and that the domain has SPF and DMARC set up properly."},{"title":"Signup fraud prevention filter","prompt":"A user just registered with the email throwaway123@mailinator.com — can you validate it for me and tell me if it's a disposable or burner address so I can decide whether to block the signup?"},{"title":"B2B lead list email audit","prompt":"I have a lead I want to reach out to: operations@bigclient.com — can you do a full email deliverability check including MX, SPF, DMARC, and whether it looks like a role account or fake address?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the provider is a known disposable/burner service, whether the address is a role account (e.g. info@, noreply@), and live DNS lookup results for MX records (mail server reachability), SPF records, and DMARC policy — giving an overall deliverability assessment for the address.","failureModes":["Malformed or missing email input returns a validation error","Domains with no DNS records may return MX-not-found or unresolvable status","Temporary DNS timeouts may cause incomplete record lookups","Very new domains may not yet have propagated MX/SPF/DMARC records, causing false negatives","Disposable provider lists may lag behind newly created burner services"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email deliverability check that combines syntax validation, disposable/burner detection, role account identification, and live DNS MX/SPF/DMARC record verification in a single call — especially in B2B lead enrichment, signup fraud prevention, or pre-campaign email list hygiene workflows where HTTP 402 micropayment and MCP compatibility are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:32:58.947Z","isFirstParty":false,"canonicalSlug":"whale-momentum-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-44657b70"}