{"uid":"cap_S9oVnrk5yBgNqSv9Vv4K_","slug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-ea7eaf3a","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://mcp-security.agentdiet.dev/v1/email)","url":"https://mcp-security.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_VR663svwZ_V2L1aF6sgOg","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.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@acme-corp.com is a real, deliverable email address — check if the domain has valid MX records, whether it's from a disposable provider, and whether SPF and DMARC are set up?","exampleUseCases":[{"title":"Screening sign-up form emails","prompt":"Before I add this new user to my CRM, can you check whether signup@tempmail.org is a legit email or a throwaway burner address, and confirm the domain actually has MX records?"},{"title":"Pre-send B2B outreach validation","prompt":"I'm about to send cold outreach to sarah.jones@bigclient.io — can you verify it's syntactically valid, the domain has live MX records, and SPF and DMARC are configured so my emails won't bounce?"},{"title":"Detecting role account submissions","prompt":"A lead just submitted info@somestartup.com through our contact form — can you check if that's a role account and whether the domain has proper email infrastructure set up?"}],"resultDescription":"Returns structured data indicating email syntax validity, whether the domain is from a known disposable/burner provider, whether it appears to be a role account (e.g. info@, admin@), live DNS MX record presence and details, SPF record content, and DMARC policy record — together forming a comprehensive deliverability and trust assessment.","failureModes":["Invalid or malformed email input returns a syntax error or 400-level response","DNS lookup timeouts for domains with slow or unreachable nameservers may result in incomplete MX/SPF/DMARC data","Very new domains may lack MX/SPF/DMARC records even if legitimate","Payment required (402) if USDC micropayment via x402 is not completed","Rate limiting or quota exhaustion may return 429 errors","Domains using non-standard or private DNS resolvers may yield inconclusive results"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-layer email validation that combines syntax checking, DNS MX reachability, disposable provider detection, and SPF/DMARC record inspection in a single call. Ideal for B2B lead qualification pipelines, user registration flows, and pre-send outreach verification where deliverability and trust signals all matter. Prefer over basic regex-only validators when live DNS checks and security record validation are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:36.437Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-87cfc270"}