{"uid":"cap_U1YwkLk9dhiDX_VSTavVS","slug":"qonoro-email-validation-d9b22bb4","name":"Qonoro Email Validation","description":"Validates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.","url":"https://api.qonoro.ai/v1/email/validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"email":{"type":"string","description":"Email address to validate (e.g. 'contact@stripe.com')."},"buyer_region":{"type":"string","description":"Optional privacy-safe buyer region for operational reporting."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"1.00","reviews":0,"stars":null,"state":"rated"},"availabilityStatus":"healthy","priceObserved":{"p10Cents":"0.5000","medianCents":"0.5000","p90Cents":"0.5000","minCents":"0.5000","maxCents":"0.5000","p95Cents":"0.5000","sampleCount":7,"varies":false,"failureChargeRate":null},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_WhblSPdTtitltCQdYHlsj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates email deliverability via syntax check, MX record lookup, and SMTP reachability, returning a risk score and quality rating.","exampleAgentPrompt":"Can you check if john.doe@acmecorp.com is a real, deliverable email address — I want to know if it'll actually reach someone before I send anything to it?","exampleUseCases":[{"title":"Pre-send email list scrubbing","prompt":"Before I launch this email campaign, run deliverability checks on these addresses and flag any with a high risk score so I can remove them from the list."},{"title":"Lead qualification for CRM intake","prompt":"A new lead just signed up with the email m.harris@startupxyz.io — can you verify it's a real, reachable address before we add them to our CRM?"},{"title":"Fraud prevention on sign-up form","prompt":"A user just registered with contact@tempmail.org — check whether that email is actually deliverable and give me a quality rating so I can decide whether to flag the account."}],"resultDescription":"Returns a risk score (numeric), a quality rating (e.g. high/medium/low/invalid), syntax validity flag, MX record lookup result, and SMTP server reachability status for the provided email address. Response is sub-second and deterministic.","failureModes":["Malformed email input returns a syntax error without performing further checks","Unreachable or non-existent domain results in MX lookup failure","SMTP server behind a catch-all configuration may report reachable even for invalid mailboxes","Rate limiting or payment failure (x402) may block the request","Network timeouts on SMTP probe may return inconclusive reachability status"],"whenToPreferThis":"Choose this endpoint when you need fast, multi-layer email validation that goes beyond syntax checking — specifically when you need to confirm MX record existence and SMTP server reachability to predict deliverability and get a risk score. Ideal for pre-campaign list hygiene, CRM intake filtering, and fraud screening on sign-up flows where accuracy and sub-second latency both matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":7,"lastUsedAt":"2026-10-08T20:32:15.780Z","lastSuccessfullyRanAt":"2026-10-08T20:32:15.780Z","lastHealthCheckAt":"2026-10-29T18:33:10.440Z","isFirstParty":false,"canonicalSlug":"qonoro-email-validation-d9b22bb4"}