{"uid":"cap_SftQaWU_RZqVzeppGfnJ0","slug":"stableenrich-email-verifier-7576dcf9","name":"Hunter Email Verifier","description":"Hunter - Verify email deliverability. Fast and cached verifications return the final result immediately; Hunter pending responses return a job id to poll with SIWX.","url":"https://stableenrich.dev/api/hunter/email-verifier?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["email"],"properties":{"email":{"type":"string","format":"email","pattern":"^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$","description":"Email address to verify"}}},"responseSchema":{"anyOf":[{"type":"object","required":["status","score","email","regexp","gibberish","disposable","webmail","mx_records","smtp_server","smtp_check","accept_all","block","sources"],"properties":{"block":{"type":"boolean"},"email":{"type":"string"},"score":{"type":"number"},"regexp":{"type":"boolean"},"status":{"enum":["valid","invalid","accept_all","webmail","disposable","unknown"],"type":"string"},"sources":{"type":"array","items":{"type":"object","required":["domain","uri","extracted_on","last_seen_on","still_on_page"],"properties":{"uri":{"type":"string"},"domain":{"type":"string"},"extracted_on":{"type":"string"},"last_seen_on":{"type":"string"},"still_on_page":{"type":"boolean"}},"additionalProperties":false},"default":[]},"webmail":{"type":"boolean"},"gibberish":{"type":"boolean"},"accept_all":{"type":"boolean"},"disposable":{"type":"boolean"},"mx_records":{"type":"boolean"},"smtp_check":{"type":"boolean"},"smtp_server":{"type":"boolean"}},"additionalProperties":false},{"type":"object","required":["jobId","status","pollUrl","retryAfterSeconds"],"properties":{"jobId":{"type":"string","description":"StableEnrich job id for the pending verification"},"status":{"type":"string","const":"pending"},"pollUrl":{"type":"string","format":"uri","description":"SIWX-authenticated URL to poll"},"retryAfterSeconds":{"type":"integer","maximum":9007199254740991,"exclusiveMinimum":0}},"additionalProperties":false}]},"example":{"request":{"email":"zero-qa@agentmail.to"},"response":{"block":false,"email":"zero-qa@agentmail.to","score":72,"regexp":true,"result":"risky","status":"accept_all","sources":[],"webmail":false,"gibberish":false,"accept_all":true,"disposable":false,"mx_records":true,"smtp_check":true,"smtp_server":true,"_deprecation_notice":"Using result is deprecated, use status instead"}},"exampleRequest":{"email":"zero-qa@agentmail.to"},"tags":["apollo","exa","firecrawl","google-maps","linkedin","reddit","enrichment","research","data","search","social"],"displayCostAmount":"0.03","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.90","reviews":0,"stars":null,"state":"rated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.03/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.03","per":"call","confidence":"exact"},{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_moSsIbwELPZTAG71ZQ95h","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x20c000000000000000000000b9537d11c60e8b50","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_urqnz7bG7wF7LxV8q8znv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":"StableEnrich","brandSlug":"stableenrich","brandBaseUrl":"https://stableenrich.dev","brandDocsUrl":"https://stableenrich.dev","whatItDoes":"Verifies the deliverability of an email address by checking SMTP, MX records, disposability, and other signals to produce a validity status and confidence score","exampleAgentPrompt":"Can you verify whether john.smith@acme.com is a real, deliverable email address — check if it's disposable, has valid MX records, and give me a deliverability score?","exampleUseCases":null,"resultDescription":"Returns a structured object with: a status enum (valid/invalid/accept_all/webmail/disposable/unknown), a numeric deliverability score (0–1), and boolean flags for regexp match, gibberish detection, disposable address, webmail provider, MX records existence, SMTP server reachability, SMTP deliverability check, accept-all domain, and blocked status. Also includes an array of web sources where the email was previously seen.","failureModes":["Invalid email format returns validation error before API call","Unknown or unresolvable domain returns status 'unknown' with low score","Disposable/temporary email services return status 'disposable'","SMTP server unreachable returns smtp_server: false and smtp_check: false","Accept-all domains return status 'accept_all' — cannot confirm individual address","Rate limit or payment failure returns 402 or 429 error"],"whenToPreferThis":"Use this endpoint when you need to verify individual email addresses before outreach campaigns, user registration, or data enrichment workflows. Prefer this over format-only validators when you need real SMTP and MX-level verification. Choose this when you need Hunter's additional signal of web-sourced sightings of the email address, or when you need disposable/webmail/gibberish detection beyond basic format checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":21,"lastUsedAt":"2026-06-25T20:52:13.915Z","lastSuccessfullyRanAt":"2026-06-25T20:52:13.915Z","lastHealthCheckAt":"2026-10-10T00:32:54.418Z","isFirstParty":false,"canonicalSlug":"stableenrich-email-verifier-7576dcf9"}