# BounceVerify - Email Verifier & Deliverability Tester (`wyle/bounceverify`) Actor

Real-time B2B email verifier. Validates syntax, DNS MX records, direct SMTP mailbox existence, catch-all domains, and disposable emails.

- **URL**: https://apify.com/wyle/bounceverify.md
- **Developed by:** [Willy Lengkong](https://apify.com/wyle) (community)
- **Categories:** Lead generation
- **Stats:** 1 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.20 / 1,000 results

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?

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

## 📧 BounceVerify - Real-Time SMTP Email Verifier & Deliverability Tester

A high-speed, enterprise-grade Apify Actor to verify email deliverability, validate mailboxes, detect spam traps, identify disposable addresses, and prevent bounce rates in cold email campaigns.

***

### 🚀 Why Use BounceVerify?

- ⚡ **Zero-Login & Public**: Verifies emails directly via DNS and RFC 5321 SMTP handshakes without requiring third-party API subscriptions.
- 🎯 **Multi-Stage Verification Engine**:
  1. **Syntax Validation**: RFC 5322 & RFC 5321 compliant regex and character checks.
  2. **DNS MX Discovery**: Resolves and prioritizes MX mail server records with fallback to A records.
  3. **Direct SMTP Handshake**: Connects to target mail exchanger, issues `EHLO`, `MAIL FROM`, and `RCPT TO` commands to check mailbox existence.
  4. **Catch-All Detection**: Automatically probes randomized addresses to identify catch-all domains.
  5. **Disposable Domain Blacklist**: Pre-loaded database of 1,500+ disposable/burner email services (Mailinator, TempMail, GuerrillaMail, etc.).
  6. **Free Provider Flag**: Flags consumer providers (Gmail, Outlook, Yahoo, Proton, etc.) vs corporate B2B domains.
  7. **Role-Based Account Detection**: Detects generic addresses (`sales@`, `support@`, `admin@`, `billing@`, etc.).
  8. **SPF & DMARC Check**: Verifies DNS authentication records.
- 💯 **Deliverability Scoring**: Returns a confidence score from `0` to `100` alongside statuses: `VALID`, `INVALID`, `RISKY`, `DISPOSABLE`, `CATCH_ALL`, `UNKNOWN`.

***

### 📥 Input Configuration

| Parameter | Type | Default | Description |
|---|---|---|---|
| `emails` | Array | `[...]` | List of email addresses to verify. |
| `rawText` | String | `""` | Raw text block or CSV lines containing emails (auto-extracted). |
| `checkSmtp` | Boolean | `true` | Connect to target MX server and perform SMTP handshake. |
| `checkCatchAll` | Boolean | `true` | Send probe to detect catch-all mail servers. |
| `timeoutSec` | Number | `7` | Socket and DNS timeout per verification. |
| `concurrency` | Integer | `5` | Number of simultaneous verifications (1 - 20). |

***

### 📤 Output Schema Sample

```json
{
  "email": "support@github.com",
  "status": "VALID",
  "sub_status": "MAILBOX_EXISTS",
  "score": 98,
  "is_deliverable": true,
  "is_disposable": false,
  "is_free": false,
  "is_role_account": true,
  "is_catch_all": false,
  "domain": "github.com",
  "user": "support",
  "mx_records": [
    "aspmx.l.google.com",
    "alt1.aspmx.l.google.com"
  ],
  "primary_mx": "aspmx.l.google.com",
  "smtp_connected": true,
  "smtp_response_code": 250,
  "has_spf": true,
  "has_dmarc": true,
  "duration_ms": 142.5
}
```

# Actor input Schema

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

List of email addresses to verify.

## `rawText` (type: `string`):

Paste raw text, CSV, or lines containing email addresses.

## `checkSmtp` (type: `boolean`):

Connect to target MX server and perform RFC 5321 handshake (RCPT TO) to test mailbox existence.

## `checkCatchAll` (type: `boolean`):

Send test randomized probe to detect if the domain accepts all emails regardless of existence.

## `timeoutSec` (type: `integer`):

Timeout in seconds for DNS and SMTP probes per email.

## `concurrency` (type: `integer`):

Number of concurrent email verifications.

## Actor input object example

```json
{
  "emails": [
    "support@github.com",
    "nonexistent_test_mailbox_12345@google.com",
    "test@mailinator.com",
    "sales@hubspot.com"
  ],
  "checkSmtp": true,
  "checkCatchAll": true,
  "timeoutSec": 7,
  "concurrency": 5
}
```

# Actor output Schema

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

Dataset of verified email addresses with status, deliverability scores, and SMTP diagnostic logs.

# 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 = {
    "emails": [
        "support@github.com",
        "nonexistent_test_mailbox_12345@google.com",
        "test@mailinator.com",
        "sales@hubspot.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("wyle/bounceverify").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 = { "emails": [
        "support@github.com",
        "nonexistent_test_mailbox_12345@google.com",
        "test@mailinator.com",
        "sales@hubspot.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("wyle/bounceverify").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 '{
  "emails": [
    "support@github.com",
    "nonexistent_test_mailbox_12345@google.com",
    "test@mailinator.com",
    "sales@hubspot.com"
  ]
}' |
apify call wyle/bounceverify --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,wyle/bounceverify"
        }
    }
}

```

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/oEh7DMpwmRnYyCE2y/builds/jGh79AeY1kdBfLqBi/openapi.json