{"uid":"cap_eOZKosmGZQV6GVYiLDbWq","slug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-5e82b7c9","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://domain-osint.agentdiet.dev/v1/mx-deliverability-verifier)","url":"https://domain-osint.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_Bf3rhGtB64iOeuPlVE4vi","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"domain-osint.agentdiet.dev","brandSlug":"domain-osint-agentdiet-dev-mpp","brandBaseUrl":"https://domain-osint.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 check whether john.smith@acmecorp.com is a real deliverable email — specifically whether the domain has valid MX records, passes SPF and DMARC checks, and isn't from a disposable or burner provider?","exampleUseCases":[{"title":"Lead qualification before CRM entry","prompt":"Before I add this lead to our CRM, can you verify that sarah.jones@startup.io is a legitimate deliverable email — check the MX records, SPF, DMARC, and whether it looks like a throwaway or role account?"},{"title":"Signup fraud detection","prompt":"A new user just signed up with temp-user@mailinator.com — can you check if that's a disposable burner email address and whether the domain has real MX and DMARC records set up?"},{"title":"Cold outreach list cleanup","prompt":"I'm about to run a cold email campaign and want to scrub my list — can you validate info@bigclient.com to see if it's a role account, whether the domain's MX records are live, and if SPF and DMARC are properly configured?"}],"resultDescription":"Returns a structured JSON object indicating email syntax validity, whether the domain belongs to a known disposable/burner provider, whether it is a role-based account (e.g. info@, admin@), and live DNS lookup results for MX, SPF, and DMARC records — collectively indicating whether the email is likely deliverable.","failureModes":["Missing or malformed email parameter returns a 400 validation error","DNS lookup timeout if the domain's nameservers are unresponsive","Disposable provider list may not include very new throwaway domains","Domain may have MX records but actual mailboxes may not exist (no SMTP-level check)","Payment failure via x402 returns 402 if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call check combining syntax validation, disposable/burner detection, role account detection, and live DNS MX/SPF/DMARC verification — especially in B2B or agent-to-agent workflows where accurate email deliverability assessment is needed before outreach, signup approval, or CRM ingestion. Prefer it over simple regex validators or basic MX-only checkers when SPF/DMARC compliance visibility also matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:24.031Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-78659ee3"}