{"uid":"cap_wU5GEhlzCqcPdgvmSBOXn","slug":"cheap-utilities-email-syntax-validator-5be635ab","name":"Cheap Utilities Email Syntax Validator","description":"Check email address syntax, role accounts (info@, admin@) and known throwaway domains. No DNS lookup, nothing sent.","url":"https://cheap-utilities.x402tookit.com/email-syntax?utm_source=zero.xyz","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 check"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"local":{"type":["null","string"]},"domain":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"normalized":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"roleAccount":{"type":["boolean","null"]},"disposableDomain":{"type":["boolean","null"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_elZK3RU8pseXCXgHPiVKf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates email address syntax, detects role accounts (info@, admin@), and identifies known throwaway/disposable domains — no DNS lookup or message sending involved.","exampleAgentPrompt":"Check whether 'info@mailinator.com' is a valid email — tell me if it's a role account or a disposable throwaway domain, and give me a plain-English verdict.","exampleUseCases":[{"title":"Signup form email quality gate","prompt":"Before we accept this user registration, check if 'noreply@guerrillamail.com' is a real email or a throwaway — and flag it if it's a role account like noreply@ or admin@."},{"title":"Bulk lead list pre-screening","prompt":"I have a sales lead with email 'support@yopmail.com' — can you validate the syntax and tell me if it's a disposable domain or a role account before we add it to the CRM?"},{"title":"Catching malformed email inputs","prompt":"A user submitted 'john..doe@@example..com' as their email address — is that syntactically valid, and what's wrong with it?"}],"resultDescription":"Returns a JSON object with: a verdict (e.g. 'invalid', 'risky', 'ok'), a normalized form of the email, the local part and domain split out, boolean flags for roleAccount and disposableDomain, an array of reasons explaining the verdict, a human-readable summary, an asOf timestamp, a source label, a degraded flag indicating whether the check ran at full capacity, a notChecked array listing skipped checks, and a disclaimer.","failureModes":["Missing email query parameter returns an error","Malformed query string may yield a parse error","Service unavailability returns an HTTP 5xx","Disposable domain list may not include very new or obscure providers, causing false negatives","Only syntax and list-based checks are performed — DNS/MX validity is explicitly not checked"],"whenToPreferThis":"Choose this endpoint when you need a fast, privacy-safe, offline-style email check that covers syntax correctness, role account detection, and disposable domain flagging without triggering DNS queries or sending any messages. Ideal for pre-filtering form submissions, lead lists, or user registrations where MX validation is unnecessary or undesirable. Prefer alternatives if you need full deliverability verification including DNS/MX record checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T00:35:08.910Z","isFirstParty":false,"canonicalSlug":"cheap-utilities-email-syntax-validator-5be635ab"}