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Email Domain Validation & Classification
x402
Email Domain Validation & Classification is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-10).
Validates and classifies an email domain via DNS: MX records, mail provider, SPF/DMARC policy, disposable/free-webmail/role-account flags, and a deliverability signal.
Price / call$0.005
Success—
StatusUnknown
How this service works
Validate and classify an email DOMAIN from public DNS: MX hosts + mail-provider, SPF and DMARC policy, plus disposable / free-webmail / role-account flags and a deliverability signal. No SMTP probing of individual mailboxes (privacy + ToS).
Output
Returns MX host records and identified mail provider, SPF and DMARC policy details, boolean flags for disposable/free-webmail/role-account classification, and an overall deliverability signal for the domain.
Example use cases
Example prompt
“Can you check whether the domain for 'signup@tempmail.io' is a disposable or free-webmail provider, and tell me if it has valid SPF and DMARC records set up?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/enrich/email?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate or classify an email domain at the DNS level without SMTP probing — ideal for pre-screening signups, detecting disposable/throwaway addresses, checking free-webmail providers, verifying SPF/DMARC policy compliance, or flagging role-based addresses like info@ or support@. Prefer it over SMTP-based validators when privacy and ToS compliance are important.
Side effects
- Domain does not exist in DNS — returns not-found or invalid domain error
- Domain has no MX records — deliverability signal will be negative
- Malformed email or domain input — returns validation error
- DNS timeout or lookup failure — returns transient error
- Rate limit or payment failure — returns 402 or 429 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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