# Email Verify API (Bulk)

> 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.

## Facts

- Endpoint: POST https://email.payapi.market/bulk-verify?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-verify-api-bulk-51fbd0b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OD48i6DVw06THRjXAKKMz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability email-verify-api-bulk-51fbd0b2 -d '<json body>'
```

Example prompt: Can you verify these emails for me and tell me which ones are real, which are disposable, and if any have typos — jane.doe@acme.com, bob@gmail.com, noreply@tempmail.org?

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 100,
   "description": "Up to 100 email addresses to verify in one batch."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-verify-api-bulk-51fbd0b2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email.payapi.market](https://www.zero.xyz/host/email.payapi.market/llms.txt)