{"uid":"cap_xQPXE9bfk3lDys62kmsgp","slug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-f2241fd2","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://mcp-security.agentdiet.dev/v1/email-check)","url":"https://mcp-security.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_B6disuaaImPx_soJPJoGZ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner domain detection, role account detection, and live DNS MX, SPF, and DMARC record checks to confirm deliverability.","exampleAgentPrompt":"Can you check whether john.doe@tempmail.com is a real, deliverable email address — specifically whether it's from a disposable provider and whether the domain has valid MX, SPF, and DMARC records set up?","exampleUseCases":[{"title":"SaaS signup fraud prevention","prompt":"Before I create an account for the user who signed up with user@guerrillamail.com, check if that email is from a disposable or burner provider and whether it has real MX records — I want to block throwaway signups."},{"title":"B2B lead email quality check","prompt":"I'm about to add contact@sales-leads.io to my outreach list — can you verify whether that email is syntactically valid, not a role account, and has proper MX and SPF records so my messages will actually deliver?"},{"title":"Email campaign deliverability audit","prompt":"Before I send my newsletter to newsletter@bigcorp.com, check if that address has valid MX records, SPF configured, and DMARC set up on its domain so I know it's worth including in the campaign."}],"resultDescription":"Returns a structured JSON object indicating whether the email passes syntax checks, whether the domain is a known disposable/burner provider, whether it is a role-based account (e.g. admin@, noreply@), and the live DNS lookup results for MX records, SPF record presence, and DMARC record presence — giving a comprehensive deliverability risk assessment.","failureModes":["Invalid or missing email parameter returns a 400 error","DNS lookup timeouts for domains with unresponsive nameservers may return partial results","Novel disposable providers not yet in the blocklist may not be flagged","Payment not processed (402) if x402 micropayment header is missing or invalid","Domains with no MX records correctly return non-deliverable but may surface false negatives for catch-all configs"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email check in a single call — combining syntax, disposable detection, role-account flagging, and live DNS MX/SPF/DMARC verification. Prefer it over simple regex-only validators when deliverability accuracy matters, or over heavyweight email-sending APIs that charge per send just to test validity. Particularly well-suited for agentic workflows that need fast, cheap per-address checks at signup, lead enrichment, or outreach list qualification.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:20:54.203Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-87cfc270"}