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Quant Agent Shop Email Check
x402
Quant Agent Shop Email Check is a paid API for AI agents from quantagentshop.com, paid per call via x402, $0.0013/call, status unknown (last checked 2026-10-23).
Validates an email address for syntax, domain mail acceptance, disposability, role-account status, and free-webmail classification without sending any email
Price / call$0.0013
Success—
StatusUnknown
How this service works
Email address check without sending mail. Returns syntax validity, the normalised address, whether the domain accepts mail (MX, null MX or address fallback), and flags for disposable, role (info@, support@) and free webmail addresses, with a verdict. Use to validate an address someone gave you. Does not confirm the mailbox exists. Typical response under 1 s. Failed calls are not charged.
Output
Returns whether the email address has valid syntax, its normalized form, whether the domain accepts mail (via MX record, null MX, or address fallback), boolean flags for disposable/temporary service, role-based address (e.g. info@, support@), and free webmail provider, plus a final verdict summarizing the overall assessment.
Example use cases
Block throwaway emails at signup
“Before I let this user register with 'user123@guerrillamail.com', can you check if it's a disposable or temporary email address that I should reject?”
Clean CRM contact list
“I have a new lead who gave me 'support@bigcorp.io' — can you tell me if that domain actually accepts email, and whether it's a generic role address I should flag?”
Normalize email before storing
“Before I save 'John.Doe+tag@Gmail.COM' to our database, can you validate it and give me the normalized version of the address?”
Technical details
Endpoint
POSThttps://quantagentshop.com/v1/email-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, lightweight email address sanity-check that covers syntax, domain acceptance, and quality signals (disposable, role, webmail) without triggering any actual email send. Prefer it over full email verification services when you do not need mailbox-level confirmation and want sub-second latency at low cost. Ideal for pre-filtering form submissions, validating CRM imports, or enriching contact records without risking deliverability issues.
Side effects
- Malformed or missing email field returns a validation error
- Email longer than 254 characters or shorter than 3 characters rejected by schema
- Network timeout when checking domain MX records may cause delayed or failed response
- Newly created domains may not yet have propagated MX records, causing false negatives on domain acceptance
- Disposable provider lists may not include very new throwaway services, causing false negatives
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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