# Email Validator (Syntax + MX + Disposable Check)

> Email Validator (Syntax + MX + Disposable Check) is a paid API for AI agents from email-validator.pdfextractapi.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Validates an email address by checking syntax correctness, live MX DNS record existence, and whether the domain is a known disposable/temporary email provider.

## Facts

- Endpoint: POST https://email-validator.pdfextractapi.workers.dev/validate
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-validator-syntax-mx-disposable-check-2f221d63
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AoplmUhOdKT6N2ufa5VqD

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-validator-syntax-mx-disposable-check-2f221d63 -d '<json body>'
```

Example prompt: Can you check whether 'john.doe@tempmail.io' is a valid, deliverable email address — specifically whether its syntax is correct, if it has a live MX record, and if it's from a disposable email service?

## When to prefer this

Choose this endpoint when you need a quick, multi-layered email check that goes beyond syntax — specifically when you need to confirm a domain can actually receive mail (live MX check) and want to catch disposable/throwaway email abuse. Prefer this over a simple regex-based validator when user trust, deliverability, or spam prevention matters. Best suited for onboarding flows, lead qualification, or any scenario where invalid or fake emails are a risk.

## Known failure modes

- Invalid or malformed email string causes a validation error response
- Domain has no DNS record (NXDOMAIN) — MX check fails with domain-not-found result
- Network or DNS timeout during live MX lookup may cause delayed or error response
- Disposable domain database may not cover every temporary mail provider — some may slip through
- Empty or missing 'email' field in request body results in a 400-level error

## How this service works

Validate an email address: syntax, live MX record check, and disposable-domain detection.

## Output

Returns a structured validation result indicating: (1) whether the email address passes syntax checks, (2) whether the domain has a live MX DNS record confirming it can receive mail, and (3) whether the domain is identified as a known disposable/temporary email provider. Typically includes a boolean or status field for each check.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string",
       "description": "The email address to validate."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-validator-syntax-mx-disposable-check-2f221d63/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from email-validator.pdfextractapi.workers.dev](https://www.zero.xyz/host/email-validator.pdfextractapi.workers.dev/llms.txt)