{"uid":"cap_LXr1_oGFGx9cY9LrgbDXF","slug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-3aefdd1a","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-check)","url":"https://arxiv-digest.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_DdWY8Kh3UOdLtXjCM2kTN","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 detection, role account flags, and live DNS MX, SPF, and DMARC record checks.","exampleAgentPrompt":"Can you check whether john.smith@example.com is a real, deliverable email address — specifically whether it passes syntax checks, isn't from a burner provider, and has valid MX, SPF, and DMARC records on the domain?","exampleUseCases":[{"title":"Lead list email hygiene","prompt":"Before we import these sales leads, check if cto@techstartup.io is a legitimate deliverable email — not a disposable address or role alias — and confirm its domain has MX and SPF records set up."},{"title":"Sign-up fraud detection","prompt":"A new user just registered with temp-mail123@guerrillamail.com — can you tell me if that's a disposable or burner email provider so I know whether to block the account?"},{"title":"Cold outreach pre-validation","prompt":"I'm about to send a cold email to info@acmecorp.com — can you verify it has working MX records and check whether it's a role account before I waste the send?"}],"resultDescription":"Returns a structured object indicating email syntax validity, whether the domain is a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), and the live DNS lookup results for MX, SPF, and DMARC records on the email's domain, collectively indicating whether the address is likely deliverable.","failureModes":["Invalid or missing email parameter returns an error","DNS lookup timeout if the domain's nameservers are unresponsive","Newly registered or obscure disposable providers may not be flagged","Role account detection may miss non-standard role prefixes","Payment failure (x402) if USDC balance insufficient"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email check covering syntax, DNS deliverability (MX), anti-spam configuration (SPF/DMARC), and disposable/role account detection. It is especially useful for B2B lead enrichment pipelines, user registration fraud prevention, and pre-send outreach validation where you need live DNS verification rather than just pattern matching.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:45.305Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b4f35698"}