{"uid":"cap_xuW02eDj3R_pnnkYM4tk4","slug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-5206ddf9","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/mx-deliverability-verifier)","url":"https://mcp-security.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_SDwd8lT-tG4I2D4MdG03J","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/DMARC record verification to assess deliverability risk.","exampleAgentPrompt":"Can you check whether john.smith@acmecorp.com is a real, deliverable email address — specifically whether its domain has valid MX records, passes SPF and DMARC checks, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Screening signups for fake emails","prompt":"We're getting a lot of new user signups and I'm worried some are using throwaway email addresses. Can you check whether the email they gave us — freestuff2024@mailinator.com — is a disposable or burner address and whether it can actually receive mail?"},{"title":"Pre-send lead list email hygiene","prompt":"Before I send this outreach campaign, can you verify that cto@prospectcompany.io is a real, deliverable address — check the MX records, SPF, and DMARC on that domain, and flag it if it looks like a role account?"},{"title":"Diagnosing email bounce investigation","prompt":"Our transactional emails to support@clientdomain.com keep bouncing. Can you check the live MX, SPF, and DMARC DNS records for that address to figure out if it's a DNS misconfiguration on their end?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the domain belongs to a known disposable/burner provider, whether it is a role-based account (e.g. admin@, noreply@), and live DNS lookup results including MX record presence, SPF record content, and DMARC policy status — enabling a holistic deliverability risk assessment.","failureModes":["Invalid or malformed email address syntax returns a syntax error flag","Domain with no MX records returns MX lookup failure","DNS timeout for slow or unreachable domains may cause incomplete results","Disposable provider list may not include brand-new burner services","Network errors reaching DNS resolvers return service errors"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check covering syntax, live DNS MX/SPF/DMARC records, and disposable/role-account detection together — rather than calling separate DNS lookup, SMTP ping, or email validation tools individually. Ideal for pre-campaign list hygiene, CRM data enrichment, and user signup screening where both DNS infrastructure and provider reputation matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:19.643Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-87cfc270"}