{"uid":"cap__AzYyAL95lY8H-x5dl0jn","slug":"email-verification-api-deliverability-flags-8f2155b7","name":"Email Verification API – Deliverability & Flags","description":"Email verification for outreach and CRM agents: syntax validation, MX lookup with implicit-MX fallback, disposable-domain detection, role-account and free-provider flags, plus-tag normalization, and a deliverability verdict. No signup, no external services.","url":"https://api.webbersites.com/api/email/verify","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["email"],"properties":{"email":{"type":"string","description":"Email address to verify"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"email":{"type":"string"},"flags":{"type":"object"},"syntax":{"type":"object"},"verdict":{"type":"string"},"normalized":{"type":"string"},"domain_check":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"email":"jane.doe+news@gmail.com","flags":{"plus_tag":true,"disposable":false,"role_account":false,"free_provider":true},"syntax":{"valid":true},"verdict":"deliverable_domain","normalized":"janedoe@gmail.com","domain_check":{"mx_found":true}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KEh9BUgEpP1oTtPBRHP9T","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies an email address for deliverability via syntax check, MX lookup, disposable-domain detection, role-account and free-provider flags, plus-tag normalization, and a final verdict.","exampleAgentPrompt":"Can you check whether john.doe+promo@tempmail.com is a real, deliverable email — tell me if it's a disposable address, a role account, or a free provider, and give me the normalized version?","exampleUseCases":[{"title":"Clean outreach list before sending","prompt":"I have a list of email addresses I'm about to use for a cold outreach campaign — can you go through each one and flag any that are disposable, role accounts, or have bad MX records so I can remove them before we start sending?"},{"title":"Validate email before CRM entry","prompt":"Before I add this new lead's email, support+tickets@gmail.com, to our CRM, can you verify it's actually deliverable, tell me if it's a role account or free provider, and give me the clean normalized version to store?"},{"title":"Detect throwaway signup emails","prompt":"A new user just signed up with the email trashbox123@guerrillamail.com — can you check if it's a disposable or throwaway address so I can decide whether to let them access the platform or prompt them for a real email?"}],"resultDescription":"Returns the original email, normalized form (plus-tag stripped), syntax validity, MX/domain check details, boolean flags for disposable domain, role account, and free provider, plus an overall deliverability verdict string.","failureModes":["Missing email query parameter — returns error indicating required field","Invalid or malformed email string — syntax check fails with details","Domain has no MX records and no implicit-MX fallback — verdict returns undeliverable","Rate limit or quota exceeded — returns 402 or 429 status","Network timeout reaching the API — no response"],"whenToPreferThis":"Use this endpoint when you need a no-signup, self-contained email validation check that combines syntax, MX lookup, disposable detection, role-account flagging, free-provider detection, and plus-tag normalization in a single call — especially for pre-CRM ingestion, outreach list cleaning, or real-time form validation without integrating a heavyweight third-party email validation service.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:46:17.348Z","isFirstParty":false}