# Bulk Email, Domain & DNS MX Record Validator (`n4d.h1dr/contact-domain-mx-verifier`) Actor

High-speed, zero-bounce contact validation. Checks email syntax, disposable domains, and live DNS MX records without sending spam.

- **URL**: https://apify.com/n4d.h1dr/contact-domain-mx-verifier.md
- **Developed by:** [Nadim Hider](https://apify.com/n4d.h1dr) (community)
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 processed items

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Bulk Email, Domain & DNS MX Record Validator

A lightning-fast, zero-bounce contact validation Actor that checks RFC 5322 email syntax, detects disposable/burner domains, queries active DNS MX servers, and scores deliverability confidence—all without sending a single spam message or triggering spam filters.

***

### 🚀 Why Use This Actor?

High email bounce rates damage your domain reputation, landing your cold outreach in spam folders or getting your ESP accounts (SendGrid, Mailgun, Postmark) suspended. This tool provides deterministic pre-flight email hygiene:

- **100% Zero Bounce**: Verifies mail server existence via live DNS MX lookups without transmitting test emails.
- **Disposable Email Detection**: Blocks temporary inboxes (Mailinator, TempMail, GuerrillaMail, etc.) before they clutter your database.
- **RFC 5322 Syntax Normalization**: Cleans whitespace, checks valid TLDs, and normalizes email formats.
- **Deliverability Scoring**: Assigns a 0–100 confidence score to help CRM automation filter risky leads automatically.
- **n8n / Make / Airtable Automation Ready**: Easily drop into Zapier, Make, n8n, or Python scripts to clean form leads in real-time.

***

### 📥 Input Schema

| Field | Type | Default | Description |
|---|---|---|---|
| `contacts` | Array | `["support@google.com", ...]` | List of email addresses or domain strings to verify. |
| `check_mx` | Boolean | `true` | When `true`, performs live DNS queries for mail exchange records. |
| `check_disposable` | Boolean | `true` | When `true`, flags known disposable and burner email domains. |

#### Sample Input JSON

```json
{
  "contacts": [
    "team@stripe.com",
    "john.doe@throwawaymail.com",
    "badly-formatted@"
  ],
  "check_mx": true,
  "check_disposable": true
}
```

***

### 📤 Output Dataset Format

```json
{
  "raw_input": "team@stripe.com",
  "email": "team@stripe.com",
  "domain": "stripe.com",
  "is_valid_syntax": true,
  "is_disposable": false,
  "has_mx_records": true,
  "mx_hosts": [
    "mxa.mailgun.org",
    "mxb.mailgun.org"
  ],
  "deliverability_score": 100.0,
  "status": "valid"
}
```

***

### 💰 Pay-Per-Event (PPE) Pricing

- **Event Name**: `item-processed`
- **Cost**: Only **$0.001 per contact** ($1.00 per 1,000 verified leads).
- Competitors charge $0.005–$0.01 per verification with expensive monthly credit plans. This Actor delivers pure Pay-Per-Event utility with zero overhead.

***

### 🔌 API & Python Client Example

```python
from apify_client import ApifyClient

client = ApifyClient("YOUR_APIFY_TOKEN")

run_input = {
    "contacts": ["sales@openai.com", "contact@anthropic.com"]
}

run = client.actor("YOUR_USERNAME/contact-domain-mx-verifier").call(run_input=run_input)
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(f"{item['email']} -> {item['status']} (Score: {item['deliverability_score']})")
```

# Actor input Schema

## `contacts` (type: `array`):

List of email addresses or domain names to verify.

## `check_mx` (type: `boolean`):

Queries DNS to verify if mail exchange servers exist and accept mail for the domain.

## `check_disposable` (type: `boolean`):

Flags temporary or burner inbox domains (e.g., mailinator, tempmail, guerrilla).

## Actor input object example

```json
{
  "contacts": [
    "support@google.com",
    "hello@github.com",
    "invalid-email-format",
    "user@tempmail.com"
  ],
  "check_mx": true,
  "check_disposable": true
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "contacts": [
        "support@google.com",
        "hello@github.com",
        "invalid-email-format",
        "user@tempmail.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("n4d.h1dr/contact-domain-mx-verifier").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "contacts": [
        "support@google.com",
        "hello@github.com",
        "invalid-email-format",
        "user@tempmail.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("n4d.h1dr/contact-domain-mx-verifier").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "contacts": [
    "support@google.com",
    "hello@github.com",
    "invalid-email-format",
    "user@tempmail.com"
  ]
}' |
apify call n4d.h1dr/contact-domain-mx-verifier --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,n4d.h1dr/contact-domain-mx-verifier"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/hXtyVhHZnJnOnvzXP/builds/GihLqrqoPe86qgYog/openapi.json