{"uid":"cap_4RGkbIPrDOcponRQjhS8y","slug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-1ec14585","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-deliverability-verifier)","url":"https://domain-osint.agentdiet.dev/v1/mx-deliverability-verifier?utm_source=zero.xyz","method":"POST","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_-RRSZunAVC4FlBg0AxdOk","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 checks to assess deliverability.","exampleAgentPrompt":"Can you check whether john.smith@acme-corp.io is a real, deliverable email — I want to know if the domain has MX, SPF, and DMARC records set up, and whether it's a disposable or role address before I add it to my CRM.","exampleUseCases":[{"title":"Signup fraud screening for SaaS","prompt":"Before I activate this new user account, check if the email they signed up with — free2use99@mailinator.com — is a disposable or burner address, and whether it can actually receive mail."},{"title":"B2B lead list hygiene","prompt":"I've got a list of prospect emails from a trade show; can you verify whether sales@globalwidgets.com has proper MX and SPF records and isn't a role account before we start the outreach campaign?"},{"title":"Cold email deliverability audit","prompt":"We're about to send a cold email sequence to partnerships@techventures.io — can you confirm the domain has MX records and DMARC configured so we know it won't bounce or get flagged?"}],"resultDescription":"Returns a structured object containing: email syntax validity, whether the domain uses a known disposable/burner provider, whether the address is a role account (e.g. info@, admin@), live MX record lookup results, SPF record presence and content, and DMARC policy status — giving a comprehensive deliverability and risk assessment for the submitted email address.","failureModes":["Invalid or malformed email input returns a syntax error","DNS lookup timeout if the domain's nameservers are unresponsive","Domain does not exist (NXDOMAIN), resulting in no MX/SPF/DMARC records found","Payment not settled (HTTP 402) if x402 micropayment header is missing or insufficient","Rate limiting or network error from the upstream DNS resolver"],"whenToPreferThis":"Choose this endpoint when you need a single-call, real-time check that combines email syntax validation, disposable/burner detection, role account flagging, and live DNS MX/SPF/DMARC verification in one response — particularly useful for CRM hygiene, signup fraud prevention, or pre-send deliverability audits. Prefer it over simple regex-only validators when live DNS truth is required, and over bulk email verification services when per-address micropayment pricing and agent-native x402 payment are preferred.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:44.446Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-78659ee3"}