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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 2026-09-13).
Validates an email address for RFC-5322 syntax correctness and flags it as disposable, role-account, or from a free email 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 validation result indicating whether the email passes RFC-5322-ish syntax rules, plus boolean flags indicating whether the address is from a known disposable email service, is a role-based account (e.g. info@, admin@, support@), or belongs to a free email provider (e.g. Gmail, Yahoo).
Example use cases
Filter disposable emails at signup
“Before we create an account for this user, can you validate 'tmpuser123@guerrillamail.com' and tell me if it's a throwaway or disposable address we should reject?”
Detect role accounts in lead list
“I have a lead email 'support@bigcorp.com' — can you check if it's a role-based address like a shared inbox rather than a real person's email?”
Pre-send email quality check
“Before I send this newsletter, validate 'jane.smith@gmail.com' and confirm it passes RFC-5322 syntax and flag whether it's from a free provider.”
Technical details
Endpoint
POSThttps://api.24klabs.ai/api/email-validateWhen to prefer
Use this endpoint when you need lightweight, fast email validation combined with disposable/role/free-provider classification in a single call — especially useful at user registration, lead qualification, or before sending transactional emails. Prefer it over pure syntax validators when you also need to flag low-quality or fraudulent email sources.
Side effects
- Missing or malformed input email returns a validation error
- Network timeout if the service is temporarily unavailable
- Edge-case RFC-5322 syntax variants may be misclassified
- Free-provider or disposable domain lists may be outdated
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true
}
}Tags
x402
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