{"uid":"cap_5VgXZ-WhdgNmdPdesQKba","slug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b4f35698","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)","url":"https://arxiv-digest.agentdiet.dev/v1/email?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_gA7U9WU-k5aSnkqEVH1tA","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@example.com is a real, deliverable email address — including whether its domain has valid MX, SPF, and DMARC records and whether it looks like a disposable or role account?","exampleUseCases":[{"title":"CRM lead email quality check","prompt":"Before I import this list of leads into our CRM, can you verify that the email address marcus.torres@techstartup.io is actually deliverable — check the syntax, DNS MX records, and whether it's a throwaway or role account?"},{"title":"Signup form disposable email detection","prompt":"A new user just signed up with the email temp-mail-9482@mailinator.com — can you verify whether this is a disposable or burner email address so I can decide whether to block the registration?"},{"title":"Cold outreach deliverability audit","prompt":"I'm about to send a cold email to ceo@bigcorpinc.com — can you check if that email address has working MX records and proper SPF and DMARC policies set up so my message won't bounce or get flagged as spam?"}],"resultDescription":"Returns a structured report on the queried email address covering: syntax validity, whether the domain is a known disposable/burner provider, whether it is a role account (e.g. admin@, noreply@), and live DNS lookup results for MX, SPF, and DMARC records — together forming an overall deliverability assessment.","failureModes":["Missing or malformed email parameter returns a 400-level error","DNS lookup timeout if the domain's nameservers are slow or unresponsive","Domain does not exist returns MX lookup failure","Service unavailable (502/503) during infrastructure outages","Payment required (402) if micropayment header is missing or incorrect"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, real-time email validation that goes beyond simple syntax checking — specifically when you need live DNS MX/SPF/DMARC verification, disposable provider detection, and role account flagging in a single call. Prefer it for B2B lead enrichment pipelines, signup fraud prevention, and cold outreach quality control. It is particularly well-suited for agent workflows that pay per-call via HTTP 402 micropayments and need structured deliverability signals without setting up their own DNS infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:02.719Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b4f35698"}