{"uid":"cap_F3FaquIU0AJLGn1vzPskL","slug":"inboxguards-email-test-email-address-validator-611185ec","name":"InboxGuards Email Test - Email Address Validator","description":"InboxGuards Email Test: Email address check: syntax, MX, disposable and role account (no SMTP probe). Checks one address without sending mail: RFC syntax, whether the domain accepts mail (MX, null MX, implicit A/AAAA), disposable domain (CC0 list), role account (info@, support@...), free provider. Verdict ok / risky / undeliverable. No SMTP probe, so mailbox existence is not confirmed. Bad syntax: 400, never charged.","url":"https://api.inboxguardstest.com/v1/email-check?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","maxLength":320,"description":"Email address, e.g. jane@example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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":"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":"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_E641afUEWIV0E9lMUg8oE","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 an email address for syntax correctness, MX deliverability, disposable domain status, and role account detection without sending any mail or performing an SMTP probe.","exampleAgentPrompt":"Can you check whether jane.doe@example.com is a valid, deliverable email address — specifically tell me if it has working MX records, if it's a disposable domain, or if it's a role account like info@ or support@?","exampleUseCases":[{"title":"User registration email screening","prompt":"Before we create an account for this new signup, can you check if the email address they gave us — noreply@mailinator.com — is valid, disposable, or a role account so we can decide whether to accept it?"},{"title":"CRM list hygiene before campaign","prompt":"I have a lead email address tdavis@info.acmecorp.com — can you validate it and tell me if it's deliverable, a role account, or on a disposable domain before I add it to our mailing list?"},{"title":"Fraud detection on checkout","prompt":"A customer just submitted the email q7x9@guerrillamail.com on checkout — can you quickly check if that email is disposable, undeliverable, or risky so I can flag the order for review?"}],"resultDescription":"Returns a verdict of 'ok', 'risky', or 'undeliverable', along with flags indicating whether the email failed RFC syntax, whether the domain has valid MX/A/AAAA records (or a null MX), whether the domain is on a known disposable-domain list, whether the local part matches role account patterns (info@, support@, etc.), and whether the domain is a free email provider. No SMTP connection is made, so mailbox existence is not confirmed.","failureModes":["400 error returned for bad email syntax — not charged","Domain has no MX record but has implicit A/AAAA fallback — may still be marked deliverable","Disposable domain list may not include very new throwaway services","SMTP-level bounces (mailbox does not exist) are not detected — false positives possible","Network timeouts on DNS lookups for obscure domains"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap, non-intrusive email check that covers syntax, DNS deliverability, disposable domains, and role accounts without triggering any mail delivery or SMTP handshake. It is ideal for pre-validation at signup forms, CRM hygiene, fraud screening, and lead qualification pipelines where speed and privacy matter. Prefer it over SMTP-probe services when you must avoid any contact with the recipient's mail server, or when cost per check needs to stay at $0.005.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T06:31:11.663Z","isFirstParty":false,"canonicalSlug":"inboxguards-email-test-email-address-validator-611185ec"}