{"uid":"cap_iR60MpXfO4bO5Ptla8f3b","slug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-03280057","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://arxiv-digest.agentdiet.dev/v1/email-validator)","url":"https://arxiv-digest.agentdiet.dev/v1/email-validator?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_mwaV0kt0A8argyRqVB-En","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"arxiv-digest.agentdiet.dev","brandSlug":"arxiv-digest-agentdiet-dev-mpp","brandBaseUrl":"https://arxiv-digest.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.doe@tempmail.com is a real, deliverable email address — specifically whether it has valid MX records, passes SPF and DMARC checks, and whether it looks like a disposable or burner account?","exampleUseCases":[{"title":"Screen sign-up email for throwaway accounts","prompt":"Someone just signed up with the email address guerrillamail99@guerrillamail.com — can you verify if it's a disposable or burner address and whether it actually has working mail servers behind it?"},{"title":"Validate lead email before outreach","prompt":"Before I add sarah.jones@acmecorp.io to my outreach campaign, can you check if the email is syntactically valid, deliverable, and whether the domain has proper SPF and DMARC records set up?"},{"title":"Audit role accounts in a contact list","prompt":"Is support@bigcompany.com a role-based email address rather than a real person's inbox? Also check if it has valid MX records and passes DMARC."}],"resultDescription":"Returns a structured object indicating whether the email address passes syntax checks, whether the domain has live MX records (confirming mail can be delivered), whether SPF and DMARC DNS records are present and valid, whether the provider is a known disposable/burner service, and whether the address is a generic role account (e.g. info@, admin@).","failureModes":["Invalid or missing email parameter returns a validation error","DNS lookup timeout if the domain's nameservers are slow or unresponsive","Domain with no MX records flagged as non-deliverable even if the domain exists","Newly registered disposable domains not yet in blocklists may pass disposable check","Temporary DNS failures may cause false negatives on SPF/DMARC records"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email health check that combines syntax validation, live DNS MX/SPF/DMARC record lookups, disposable provider detection, and role account identification in a single call — particularly suited for agent-driven lead enrichment, sign-up fraud prevention, or pre-send campaign validation where all four checks are needed together rather than querying separate services.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:51:19.292Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b4f35698"}