{"uid":"cap_-2SzTFMYw2D9R3c847yS8","slug":"workflows-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-28ca605a","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://workflows.agentdiet.dev/v1/email-check)","url":"https://workflows.agentdiet.dev/v1/email-check?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_djGyuM3J4Z05afgYg0Y0U","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"workflows.agentdiet.dev","brandSlug":"workflows-agentdiet-dev-mpp","brandBaseUrl":"https://workflows.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 presence.","exampleAgentPrompt":"Can you check whether john.smith@acme-corp.io is a real, deliverable email address — specifically look at whether it has valid MX records, isn't a disposable or burner address, and whether the domain has SPF and DMARC set up?","exampleUseCases":[{"title":"Screening signup form submissions","prompt":"Before we onboard this new user, can you verify that their email address sarah.jones@tempmail.org isn't a throwaway or disposable address and that it actually has working mail servers behind it?"},{"title":"Pre-campaign lead list hygiene","prompt":"I have a B2B lead with the email contact@horizon-ventures.com — can you check if it's deliverable, whether it's a role account, and if the domain has MX, SPF, and DMARC configured properly before I add them to my outreach sequence?"},{"title":"CRM data quality audit","prompt":"We just imported a list of prospects and I want to spot-check one: does billing@globaltech.net look like a valid, non-disposable email with proper DNS mail records, or should we flag it for review?"}],"resultDescription":"Returns a structured object covering: email syntax validity, whether the provider is a known disposable or burner service, whether the address is a role account (e.g. admin@, noreply@), and live DNS lookup results for MX records (mail server presence), SPF record validity, and DMARC policy record existence — giving an overall deliverability assessment for the address.","failureModes":["Missing or malformed email parameter returns a validation error","DNS timeout or lookup failure may result in inconclusive MX/SPF/DMARC results","Very new or obscure domains may lack SPF/DMARC records, flagged as absent rather than invalid","Payment required (HTTP 402) if x402 micropayment is not fulfilled","Rate limiting if too many requests are made without proper payment flow"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email deliverability check that goes beyond simple regex syntax validation — specifically when you need live DNS MX record verification combined with SPF/DMARC policy checks and disposable/role-account detection in a single call. Prefer it over generic email syntax validators when the cost of bounced email or fake signups is high, such as in B2B lead enrichment, CRM hygiene, or pre-send campaign validation workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:27.118Z","isFirstParty":false,"canonicalSlug":"workflows-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-verifier-9ae3af34"}