# Neverbounce Email Verifier (`tryprane/neverbounce-email-verifier`) Actor

- **URL**: https://apify.com/tryprane/neverbounce-email-verifier.md
- **Developed by:** [Pranjal Yadav](https://apify.com/tryprane) (community)
- **Categories:**
- **Stats:** 8 total users, 7 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

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

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
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.
Actors are written with capital "A".

## 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.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## NeverBounce Email Verifier Actor

A lightning-fast, ultra-low bandwidth email deliverability verification Actor powered by **NeverBounce** and **Scrapling StealthyFetcher**, with automated **Apify Residential Proxy rotation**.

### ⚡ What Makes This Architecture Unique?

- **Hybrid Token-Pool Engine**:
  - Solves PerimeterX (`_pxhd`) security tokens using a local stealth browser instance (**0 proxy data consumed**).
  - Routes individual verification checks as lightweight raw HTTP calls through **Apify Residential Proxies** (**only ~1.5 KB per verification** instead of ~600 KB).
  - **Yields up to 500,000+ email verifications per 1 GB of residential proxy data!**
- **Accurate Real-Time Verification**: Retrieves live deliverability status (`valid`, `invalid`, `disposable`, `catch_all`, `unknown`) directly from NeverBounce.
- **Detailed MX, SMTP & History Flags**:
  - `historical_response`: Indicates whether the result was retrieved from NeverBounce's historical database.
  - `smtp_connectable`: Confirms destination mail server accepts incoming connections.
  - `has_dns` & `has_dns_mx`: Verifies active DNS and MX records.
  - `free_email`: Identifies personal webmail (Gmail, Yahoo, Hotmail).
  - `role_account`: Detects generic addresses (admin@, support@, info@).
- **Zero Errors & Automatic Proxy Rotation**: Automatically rotates Apify Residential Proxy sessions on any rate-limiting (`429`) or challenge (`403`), guaranteeing continuous runs without failure.

***

### 📥 Input Parameters

| Field | Type | Description |
| :--- | :--- | :--- |
| `email` | String | Single email address (e.g. `satya@microsoft.com`). |
| `emails` | Array of Strings | Optional list of emails for batch verification. |
| `proxy_url` | String | *(Optional)* Custom residential proxy URL. If left empty, Apify Residential Proxy is used. |

#### Example Input

```json
{
  "email": "satya@microsoft.com"
}
```

Or batch:

```json
{
  "emails": [
    "satya@microsoft.com",
    "bill.gates@gatesfoundation.org",
    "support@neverbounce.com"
  ]
}
```

***

### 📤 Output Dataset Format

Each verified email produces a clean, structured record in your default Apify dataset:

```json
{
  "email": "satya@microsoft.com",
  "status": "valid",
  "is_valid": true,
  "historical_response": true,
  "free_email": false,
  "role_account": false,
  "smtp_connectable": true,
  "has_dns": true,
  "has_dns_mx": true,
  "flags": [
    "has_dns",
    "has_dns_mx",
    "smtp_connectable",
    "historical_response"
  ],
  "verification_method": "fast_http",
  "transfer_bytes": 156,
  "proxy_session": "nb_3f1a_1",
  "attempts": 1,
  "latency_seconds": 0.42,
  "error": null
}
```

# Actor input Schema

## `email` (type: `string`):

Single email address to verify (e.g. support@neverbounce.com or satya@microsoft.com).

## `emails` (type: `array`):

Optional list of emails to verify in a single run.

## `proxy_url` (type: `string`):

Optional custom proxy URL (format: http://user:pass@host:port). If omitted, Apify Residential Proxy will be used automatically.

## Actor input object example

```json
{
  "email": "support@neverbounce.com"
}
```

# Actor output Schema

## `overview` (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 = {
    "email": "support@neverbounce.com"
};

// Run the Actor and wait for it to finish
const run = await client.actor("tryprane/neverbounce-email-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 = { "email": "support@neverbounce.com" }

# Run the Actor and wait for it to finish
run = client.actor("tryprane/neverbounce-email-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 '{
  "email": "support@neverbounce.com"
}' |
apify call tryprane/neverbounce-email-verifier --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,tryprane/neverbounce-email-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/fvGB7p1ZDIy3ctrs9/builds/ZB8BmTdktWqwv2ag9/openapi.json