{"uid":"cap_j80HgqMGioDTB4OFAuwhP","slug":"prompt-guard-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-cc73b5f2","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://prompt-guard.agentdiet.dev/v1/email-verify)","url":"https://prompt-guard.agentdiet.dev/v1/email-verify?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_gXbqMn4GKcyX-8q_In-99","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Validates an email address for syntax correctness, disposable/burner provider status, role account detection, and live DNS MX/SPF/DMARC record checks to confirm deliverability.","exampleAgentPrompt":"Can you check whether john.doe@example.com is a real, deliverable email address — including whether the domain has valid MX records, passes SPF and DMARC checks, and isn't a disposable or role-based address?","exampleUseCases":[{"title":"Screening signups for fake emails","prompt":"Before I activate this new user account, can you verify that their email signup@tempmail.io is legitimate — not a disposable burner address — and that the domain actually accepts mail?"},{"title":"Qualifying sales leads before outreach","prompt":"I have a lead with the email contact@acmecorp.com — can you check if it's a valid deliverable address with proper MX and SPF records set up before I add them to our outreach sequence?"},{"title":"Validating bulk list before email campaign","prompt":"Check whether info@bigretailer.com is a role account or a real deliverable inbox, and confirm the domain has DMARC configured, so I know if it's worth including in our campaign."}],"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@, support@), live MX record presence and details, SPF record validity, DMARC record presence and policy, and an overall deliverability verdict.","failureModes":["Invalid or malformed email string returns a syntax error flag","Domain with no MX records results in undeliverable verdict","DNS lookup timeout may result in inconclusive MX/SPF/DMARC status","Disposable provider databases may have coverage gaps for very new burner services","Payment failure via x402 returns HTTP 402 before validation occurs"],"whenToPreferThis":"Choose this endpoint when you need a comprehensive, multi-signal email validation that goes beyond simple syntax checks — combining live DNS MX/SPF/DMARC lookups with disposable provider and role account detection in a single call. Prefer it over basic regex validators when lead quality, email campaign deliverability, or user signup fraud prevention is the goal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:30:53.448Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-b2a-email-deliverability-mx-spf-dmarc-f0765224"}