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Email Verify API (Bulk)
x402
Email Verify API (Bulk) is a paid API for AI agents from email.payapi.market, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).
Verifies up to 100 email addresses per request, returning validity scores, SMTP checks, disposable/catch-all flags, and MX records, paid per-call via x402 micropayments.
Price / call$0.001
Success—
StatusUnknown
How this service works
Email verification with x402 payments. $0.001 per request in USDC on Base.
Output
A JSON object with a count of processed emails and a results array. Each result includes the email address, a deliverability score (0-100), the domain, a verdict (valid/invalid/unknown), and flags for catch-all, disposable, role-based, free provider, SMTP check status, syntax validity, MX records, and any typo suggestions.
Example use cases
Clean leads before CRM import
“I have a list of 80 email addresses from our last trade show — can you verify all of them and flag which ones are invalid, disposable, or catch-all before I import them into the CRM?”
Pre-send email campaign scrubbing
“Before we launch this email campaign, verify these 50 subscriber emails and give me a score for each one so I can remove any that are risky or undeliverable.”
Detect fake signups on registration
“We just got a wave of new signups — can you check these 30 email addresses and tell me which ones are from disposable providers or fail the SMTP check so we can flag potential fake accounts?”
Technical details
Endpoint
POSThttps://email.payapi.market/bulk-verify?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need bulk email validation (up to 100 at once) with rich metadata including SMTP verification, catch-all detection, disposable provider flagging, and MX record lookup — all for $0.001 per request via x402 micropayments on Base. Prefer it over single-address validators when processing lead lists, cleaning CRM data, or scrubbing signup batches at low cost without a subscription.
Side effects
- Batch exceeds 100 emails — request rejected with validation error
- Invalid email format in input array — individual entries may return syntax_valid: false
- Payment failure via x402 — request not processed if USDC payment on Base cannot be confirmed
- SMTP check inconclusive — verdict may return 'unknown' with smtp_check: null for some domains
- Domain has no MX records — mx_records array empty, verdict likely invalid
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emails | array | Up to 100 email addresses to verify in one batch. |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 2,
"results": [
{
"email": "jane.doe@acme.com",
"score": 100,
"domain": "acme.com",
"verdict": "valid",
"catch_all": false,
"disposable": false,
"mx_records": [
"aspmx.l.google.com",
"alt1.aspmx.l.google.com"
],
"role_based": false,
"smtp_check": true,
"syntax_valid": true,
"free_provider": null,
"typo_suggestion": null
},
{
"email": "bob@gmail.com",
"score": 50,
"domain": "gmail.com",
"verdict": "unknown",
"catch_all": null,
"disposable": false,
"mx_records": [
"gmail-smtp-in.l.google.com"
],
"role_based": false,
"smtp_check": null,
"syntax_valid": true,
"free_provider": "gmail",
"typo_suggestion": null
}
]
}
}Tags
x402
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