# Deduplicate Email Lists Before CRM Import

**Use case:** 

Normalize, classify, and deduplicate email rows while preserving the first source index and explicitly reporting omitted duplicate output.

## Input

```json
{
  "emails": [
    "Person@gmail.com",
    "person@GMAIL.com",
    "info@mailinator.com",
    "broken-address"
  ],
  "emailField": "email",
  "maxItems": 100,
  "concurrency": 10,
  "dnsTimeoutMs": 5000,
  "checkDns": true,
  "emitUniqueOnly": true
}
```

## Output

```json
{
  "sourceIndex": {
    "label": "Source index",
    "format": "integer"
  },
  "normalizedEmail": {
    "label": "Normalized email",
    "format": "string"
  },
  "status": {
    "label": "Status",
    "format": "string"
  },
  "dnsStatus": {
    "label": "Dns status",
    "format": "string"
  },
  "isDisposable": {
    "label": "Disposable",
    "format": "boolean"
  },
  "isRoleAccount": {
    "label": "Role account",
    "format": "boolean"
  },
  "isFreeProvider": {
    "label": "Free provider",
    "format": "boolean"
  },
  "suggestedDomain": {
    "label": "Suggested domain",
    "format": "string"
  },
  "isDuplicate": {
    "label": "Duplicate",
    "format": "boolean"
  },
  "invalidReason": {
    "label": "Invalid reason",
    "format": "string"
  },
  "riskFlags": {
    "label": "Risk flags",
    "format": "array"
  }
}
```

## About this Actor

This example demonstrates how to use [Bulk Email Hygiene & MX Validator](https://apify.com/craigtechservicesllc/bulk-email-hygiene-mx-validator.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/craigtechservicesllc/bulk-email-hygiene-mx-validator.md) to learn more, explore other use cases, and run it yourself.


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This Task's input is already configured above — use it as-is rather than inventing a new one.

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For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/craigtechservicesllc/bulk-email-hygiene-mx-validator.md

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).