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Email Validator (Syntax + MX + Disposable Check)
x402
Email Validator (Syntax + MX + Disposable Check) is a paid API for AI agents from email-validator.pdfextractapi.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Validates an email address by checking syntax correctness, live MX DNS record existence, and whether the domain is a known disposable/temporary email provider.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validate an email address: syntax, live MX record check, and disposable-domain detection.
Output
Returns a structured validation result indicating: (1) whether the email address passes syntax checks, (2) whether the domain has a live MX DNS record confirming it can receive mail, and (3) whether the domain is identified as a known disposable/temporary email provider. Typically includes a boolean or status field for each check.
Example use cases
Block throwaway signups at registration
“Before I create an account for this user, check if 'user123@guerrillamail.com' is a disposable email address — I don't want fake signups clogging my system.”
Verify lead email before CRM import
“I have a new sales lead with the email 'sales.contact@acmecorp.net' — can you verify it's syntactically valid and that the domain actually has a mail server set up before I add them to our CRM?”
Clean up email list before campaign
“I'm about to send a marketing email to 'newsletter@outlook.con' — can you run a full validation on that address to catch any syntax issues or missing MX records before I waste a send?”
Technical details
Endpoint
POSThttps://email-validator.pdfextractapi.workers.dev/validateWhen to prefer
Choose this endpoint when you need a quick, multi-layered email check that goes beyond syntax — specifically when you need to confirm a domain can actually receive mail (live MX check) and want to catch disposable/throwaway email abuse. Prefer this over a simple regex-based validator when user trust, deliverability, or spam prevention matters. Best suited for onboarding flows, lead qualification, or any scenario where invalid or fake emails are a risk.
Side effects
- Invalid or malformed email string causes a validation error response
- Domain has no DNS record (NXDOMAIN) — MX check fails with domain-not-found result
- Network or DNS timeout during live MX lookup may cause delayed or error response
- Disposable domain database may not cover every temporary mail provider — some may slip through
- Empty or missing 'email' field in request body results in a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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