{"uid":"cap_QlL0i0PQOIQaY6h1Ved_U","slug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-7840e4c9","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-check)","url":"https://domain-osint.agentdiet.dev/v1/mx-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_gzgGuvFKu1zNGmR7pnL3V","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 presence.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — look up its MX, SPF, and DMARC records and flag it if it's from a disposable or burner provider?","exampleUseCases":[{"title":"Filter fake sign-up emails","prompt":"Before we onboard this new user, check if the email they signed up with — temp-mail-user@guerrillamail.com — is real and deliverable or just a throwaway burner address."},{"title":"Pre-send deliverability audit","prompt":"I'm about to send an outreach campaign to contact@bigcorp.io — can you verify the email is syntactically valid, the domain has MX records set up, and SPF and DMARC are configured correctly?"},{"title":"Role account detection for CRM hygiene","prompt":"We have info@acme.com in our CRM — is that a role account rather than a real person's address, and does the domain actually have working mail servers?"}],"resultDescription":"Returns a structured report on the email address including: syntax validity result, whether the domain uses a known disposable/burner provider, whether the address is a role account (e.g. admin@, noreply@), live DNS MX record lookup results, SPF record presence and content, and DMARC record presence and policy — collectively indicating whether the address is likely deliverable and trustworthy.","failureModes":["Missing or malformed email parameter returns a 400 validation error","DNS lookup timeouts for domains with slow or unresponsive nameservers","Disposable provider list may not cover newly created burner services","MX records may exist but mailboxes may still be inactive (false positive on deliverability)","Payment required (HTTP 402) if x402 micropayment is not fulfilled","Domain may have MX records pointing to non-functional mail servers"],"whenToPreferThis":"Choose this endpoint when you need a combined, live check of email syntax, disposable-provider detection, role-account classification, and actual DNS record verification (MX, SPF, DMARC) in a single call. Prefer it over simple regex validators when real deliverability matters, or over generic WHOIS tools when you specifically need email-layer DNS hygiene rather than domain registration data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:16.968Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-78659ee3"}