# Bulk Email Verifier - SMTP Validation (`leadproof/bulk-email-verifier`) Actor

Verify email deliverability in bulk. Paste a list or chain it after any scraper - get ok / catch-all / invalid / disposable verdicts per address.

- **URL**: https://apify.com/leadproof/bulk-email-verifier.md
- **Developed by:** [aniam Ben or](https://apify.com/leadproof) (community)
- **Categories:** Lead generation, Marketing
- **Stats:** 3 total users, 2 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $4.90 / 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/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases.
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.

In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js/docs.md):

```bash
npm install apify-client
```

In Python projects, use official [Python client library](https://docs.apify.com/api/client/python/docs.md):

```bash
pip install apify-client
```

In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md):

````bash
# MacOS / Linux
curl -fsSL https://apify.com/install-cli.sh | bash
# Windows
irm https://apify.com/install-cli.ps1 | iex
```bash

In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/integrations/mcp.md).

If your project is in a different language, use 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

## Bulk Email Verifier — SMTP Validation

Verify email deliverability in bulk, right inside your Apify workflow. Paste a list of addresses — or chain this Actor after any scraper — and get a clean verdict for every address: **deliverable, catch-all, invalid, disposable, or unknown**.

No API keys to manage, no verification account to set up. You pay only per verified result.

### Why verify?

Scraped email lists typically contain 10–40% undeliverable addresses. Sending to them destroys your sender reputation and gets your domain blacklisted. Verifying first means your outreach lands.

### How to use

**Option A — paste a list**: put your addresses in the *Email addresses* field and run.

**Option B — chain after a scraper**: run any scraper that outputs emails (Google Maps, website contact scrapers, etc.), then pass its **dataset ID** to this Actor. Set *Email field name* if the scraper uses a field other than `email`. Fields containing arrays of emails are handled automatically.

### Output

One dataset item per unique input address:

| Field | Meaning |
|---|---|
| `email` | The address (normalized: lowercased, trimmed, deduplicated) |
| `result` | `ok` · `catch_all` · `invalid` · `disposable` · `unknown` · `error` |
| `quality` | `good` · `bad` · `risky` |
| `subresult` | Detailed reason (e.g. `mailbox_not_found`, `malformed_syntax`) |
| `is_deliverable` | `true` only when `result` is `ok` — safe to send |
| `free_provider` | Address is on a free provider (gmail, yahoo, …) |
| `role_address` | Role-based address (info@, support@, …) |
| `did_you_mean` | Suggested correction for likely typos |

A run **SUMMARY** (totals by verdict) is saved to the key-value store and shown in the run status.

Malformed addresses are filtered locally and returned as `invalid` / `malformed_syntax` — they never count against verification.

### Notes

- **Fair use:** only submit email data you obtained and use lawfully (e.g. under GDPR/CAN-SPAM as applicable to you). You are responsible for the lists you verify.
- Duplicate addresses are verified once.
- `catch_all` domains accept all mail — deliverability can't be confirmed mailbox-by-mailbox. Treat as "risky".
- `unknown` means the mail server didn't respond in time; re-running just those addresses often resolves them.

---

*Looking for leads that come pre-verified? Try [Google Maps Leads with Verified Emails](https://apify.com/leadproof/google-maps-verified-leads) — B2B leads with SMTP-verified emails, review-count filtering, and dedup against your own CRM export. You pay only for delivered leads.*

# Actor input Schema

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

List of email addresses to verify. Use this, a dataset ID, or both.
## `datasetId` (type: `string`):

ID of a dataset produced by another Actor run (e.g. a Google Maps scraper). Emails are read from the field configured below.
## `emailField` (type: `string`):

Which field of each dataset item holds the email address. A field holding an array of emails works too.
## `concurrency` (type: `integer`):

How many verification requests run in parallel.
## `mvTimeoutSeconds` (type: `integer`):

How long a single mailbox check may take before returning 'unknown'.

## Actor input object example

```json
{
  "emails": [
    "john.doe@gmail.com",
    "contact@apify.com"
  ],
  "emailField": "email",
  "concurrency": 10,
  "mvTimeoutSeconds": 20
}
````

# 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": [
        "john.doe@gmail.com",
        "contact@apify.com"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("leadproof/bulk-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 = { "emails": [
        "john.doe@gmail.com",
        "contact@apify.com",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("leadproof/bulk-email-verifier").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"])
for item in client.dataset(run["defaultDatasetId"]).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": [
    "john.doe@gmail.com",
    "contact@apify.com"
  ]
}' |
apify call leadproof/bulk-email-verifier --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=leadproof/bulk-email-verifier",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

```json
{
    "openapi": "3.0.1",
    "info": {
        "title": "Bulk Email Verifier - SMTP Validation",
        "description": "Verify email deliverability in bulk. Paste a list or chain it after any scraper - get ok / catch-all / invalid / disposable verdicts per address.",
        "version": "0.1",
        "x-build-id": "s29VDFH0TsYEMFezI"
    },
    "servers": [
        {
            "url": "https://api.apify.com/v2"
        }
    ],
    "paths": {
        "/acts/leadproof~bulk-email-verifier/run-sync-get-dataset-items": {
            "post": {
                "operationId": "run-sync-get-dataset-items-leadproof-bulk-email-verifier",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        },
        "/acts/leadproof~bulk-email-verifier/runs": {
            "post": {
                "operationId": "runs-sync-leadproof-bulk-email-verifier",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor and returns information about the initiated run in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/runsResponseSchema"
                                }
                            }
                        }
                    }
                }
            }
        },
        "/acts/leadproof~bulk-email-verifier/run-sync": {
            "post": {
                "operationId": "run-sync-leadproof-bulk-email-verifier",
                "x-openai-isConsequential": false,
                "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.",
                "tags": [
                    "Run Actor"
                ],
                "requestBody": {
                    "required": true,
                    "content": {
                        "application/json": {
                            "schema": {
                                "$ref": "#/components/schemas/inputSchema"
                            }
                        }
                    }
                },
                "parameters": [
                    {
                        "name": "token",
                        "in": "query",
                        "required": true,
                        "schema": {
                            "type": "string"
                        },
                        "description": "Enter your Apify token here"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK"
                    }
                }
            }
        }
    },
    "components": {
        "schemas": {
            "inputSchema": {
                "type": "object",
                "properties": {
                    "emails": {
                        "title": "Email addresses",
                        "type": "array",
                        "description": "List of email addresses to verify. Use this, a dataset ID, or both.",
                        "items": {
                            "type": "string"
                        }
                    },
                    "datasetId": {
                        "title": "Dataset ID (chain from another Actor)",
                        "type": "string",
                        "description": "ID of a dataset produced by another Actor run (e.g. a Google Maps scraper). Emails are read from the field configured below."
                    },
                    "emailField": {
                        "title": "Email field name in the dataset",
                        "type": "string",
                        "description": "Which field of each dataset item holds the email address. A field holding an array of emails works too.",
                        "default": "email"
                    },
                    "concurrency": {
                        "title": "Concurrency",
                        "minimum": 1,
                        "maximum": 50,
                        "type": "integer",
                        "description": "How many verification requests run in parallel.",
                        "default": 10
                    },
                    "mvTimeoutSeconds": {
                        "title": "Per-email verification timeout (seconds)",
                        "minimum": 5,
                        "maximum": 60,
                        "type": "integer",
                        "description": "How long a single mailbox check may take before returning 'unknown'.",
                        "default": 20
                    }
                }
            },
            "runsResponseSchema": {
                "type": "object",
                "properties": {
                    "data": {
                        "type": "object",
                        "properties": {
                            "id": {
                                "type": "string"
                            },
                            "actId": {
                                "type": "string"
                            },
                            "userId": {
                                "type": "string"
                            },
                            "startedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "finishedAt": {
                                "type": "string",
                                "format": "date-time",
                                "example": "2025-01-08T00:00:00.000Z"
                            },
                            "status": {
                                "type": "string",
                                "example": "READY"
                            },
                            "meta": {
                                "type": "object",
                                "properties": {
                                    "origin": {
                                        "type": "string",
                                        "example": "API"
                                    },
                                    "userAgent": {
                                        "type": "string"
                                    }
                                }
                            },
                            "stats": {
                                "type": "object",
                                "properties": {
                                    "inputBodyLen": {
                                        "type": "integer",
                                        "example": 2000
                                    },
                                    "rebootCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "restartCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "resurrectCount": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "computeUnits": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "options": {
                                "type": "object",
                                "properties": {
                                    "build": {
                                        "type": "string",
                                        "example": "latest"
                                    },
                                    "timeoutSecs": {
                                        "type": "integer",
                                        "example": 300
                                    },
                                    "memoryMbytes": {
                                        "type": "integer",
                                        "example": 1024
                                    },
                                    "diskMbytes": {
                                        "type": "integer",
                                        "example": 2048
                                    }
                                }
                            },
                            "buildId": {
                                "type": "string"
                            },
                            "defaultKeyValueStoreId": {
                                "type": "string"
                            },
                            "defaultDatasetId": {
                                "type": "string"
                            },
                            "defaultRequestQueueId": {
                                "type": "string"
                            },
                            "buildNumber": {
                                "type": "string",
                                "example": "1.0.0"
                            },
                            "containerUrl": {
                                "type": "string"
                            },
                            "usage": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "integer",
                                        "example": 1
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            },
                            "usageTotalUsd": {
                                "type": "number",
                                "example": 0.00005
                            },
                            "usageUsd": {
                                "type": "object",
                                "properties": {
                                    "ACTOR_COMPUTE_UNITS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATASET_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "KEY_VALUE_STORE_WRITES": {
                                        "type": "number",
                                        "example": 0.00005
                                    },
                                    "KEY_VALUE_STORE_LISTS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_READS": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "REQUEST_QUEUE_WRITES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_INTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "DATA_TRANSFER_EXTERNAL_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_RESIDENTIAL_TRANSFER_GBYTES": {
                                        "type": "integer",
                                        "example": 0
                                    },
                                    "PROXY_SERPS": {
                                        "type": "integer",
                                        "example": 0
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
```