# Email Address Verification API

> Email Address Verification API is a paid API for AI agents from vmi3089643.contaboserver.net, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Verifies an email address by checking syntax validity, domain existence, MX records, disposable provider status, free provider detection, and returning a deliverability score

## Facts

- Endpoint: GET https://vmi3089643.contaboserver.net/v1/email/verify
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/email-address-verification-api-38584aec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_96o0tykL6M30WiivPjkSl

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-address-verification-api-38584aec
```

Example prompt: Can you check whether 'john.doe@tempmail.com' is a real, deliverable email address — specifically whether it has valid syntax, a working MX record, and isn't from a disposable or free email provider?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-use email verification check that covers syntax, domain, MX, disposable, and free-provider signals in a single call without a subscription. Ideal for agents doing on-demand single-email validation during lead capture, signup flows, or list hygiene — especially when cost-per-call pricing ($0.002 USDC) is preferable to a monthly SaaS plan.

## Known failure modes

- Missing or malformed email query parameter returns an error
- Non-existent TLD or completely invalid syntax may return syntaxValid: false with score near 0
- DNS lookup timeouts for obscure domains may affect MX record accuracy
- Edge cases with new disposable provider domains not yet in database may not be flagged
- Payment failure via x402 protocol blocks the request

## How this service works

Pay-per-call crypto technical analysis for AI agents (x402, USDC on Base). Daily trend regime, Donchian levels, ATR stops, signals and backtests computed with the code of a live trend-following bot from Binance spot klines.

## Output

Returns a JSON object with the original email, domain, a boolean for syntax validity, a boolean for MX record presence, a boolean for disposable provider, a boolean for free provider (e.g. Gmail/Yahoo), and a numeric deliverability score between 0 and 1.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "email"
     ],
     "properties": {
      "email": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "email": "name@example.com",
  "hasMx": false,
  "score": 0.2,
  "domain": "example.com",
  "disposable": false,
  "syntaxValid": true,
  "freeProvider": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/email-address-verification-api-38584aec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vmi3089643.contaboserver.net](https://www.zero.xyz/host/vmi3089643.contaboserver.net/llms.txt)