{"uid":"cap_J4l5ekabFPJDoY1Xs7PCU","slug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-7f982e13","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/spf-dmarc-auditor)","url":"https://arxiv-digest.agentdiet.dev/v1/spf-dmarc-auditor?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_KKBGpyPfaWKm08iNCrD56","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 verification.","exampleAgentPrompt":"Can you check whether john.smith@acme-corp.com is a real, deliverable email — specifically whether the domain has valid MX records, passes SPF and DMARC, and isn't a disposable or role account?","exampleUseCases":[{"title":"Filter fake signups at registration","prompt":"Before we add this new user to our list, can you verify that signup@tempmail.io is a legitimate email — not a disposable address — and that its domain actually accepts mail with proper MX records?"},{"title":"B2B lead email quality check","prompt":"I have a sales lead with email ceo@startupxyz.com — can you check if it's syntactically valid, deliverable, and whether that domain has SPF and DMARC configured so my outreach won't bounce?"},{"title":"Email security posture audit","prompt":"Can you audit the email domain for support@bigretailer.com and tell me whether they have MX, SPF, and DMARC records set up correctly, and whether the address looks like a role account?"}],"resultDescription":"Returns structured validation results for the submitted email address including: syntax validity, whether the domain is a known disposable/burner provider, whether it is a role-based account (e.g. info@, noreply@), live DNS MX record presence and details, SPF record content and validity, and DMARC policy record and enforcement status — enabling a full deliverability and authentication assessment.","failureModes":["Invalid or malformed email input returns a syntax error with no DNS lookup performed","DNS lookup timeout if the domain's nameservers are slow or unreachable","Domain does not exist resulting in no MX records found","Payment failure via x402 returns HTTP 402 before any validation occurs","Rate limiting if too many requests are submitted in a short window"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, single-call email health check that combines syntax validation, disposable provider detection, role account flagging, and live DNS MX/SPF/DMARC verification. It is especially useful for lead enrichment pipelines, user registration fraud prevention, and B2B sales outreach quality control where email authentication posture (SPF, DMARC) matters alongside basic deliverability. Prefer this over simple syntax-only validators when DNS-level verification is required, and over generic WHOIS tools when email-specific authentication records are the focus.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:04.424Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-b4f35698"}