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24K Labs Email Validator
x402
24K Labs Email Validator is a paid API for AI agents from api.24klabs.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Validates an email address for RFC-5322 syntax and flags it as disposable, role-account, or free-provider
Price / call$0.002
Success—
StatusUnknown
How this service works
RFC-5322-ish syntax check plus disposable / role-account / free-provider flags.
Output
Returns a structured result indicating whether the email passes RFC-5322 syntax rules, and boolean flags for: disposable/temporary provider, role-account prefix (e.g. info@, admin@, support@), and free email provider (e.g. Gmail, Yahoo).
Example use cases
Block throwaway signups at registration
“Before I save this new user's email 'tempuser123@guerrillamail.com', check if it's disposable or a free provider so I can decide whether to reject it.”
Scrub a lead list for role accounts
“I have a sales lead that submitted 'info@acmecorp.com' — can you tell me if that's a role-based email address and whether the syntax is valid?”
Pre-send validation for email campaign
“I'm about to send a campaign to 'noreply@bigcompany.org' — validate whether it's syntactically correct and flag it if it's a role account or from a free email provider.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/v1/email-validateWhen to prefer
Use this endpoint when you need a fast, lightweight email quality check at the point of user input or data ingestion — especially to catch throwaway addresses, role accounts, or free-provider emails before committing them to a database or sending a message. Prefer this over a full email deliverability/SMTP-ping check when you want a low-latency, syntax-plus-classification signal without sending a verification email.
Side effects
- Malformed or missing email input returns a validation error
- Edge-case RFC-5322 syntax may be misclassified as valid or invalid
- Disposable provider list may not include the newest throwaway domains
- Free-provider and role-account flags rely on heuristic lists that may have gaps
- Network timeout or service unavailability returns an HTTP error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true
}
}Tags
x402
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