# Detect catch-all and disposable emails

**Use case:** 

Find the addresses of a list that use a disposable email provider, sit on a catch-all domain that accepts every address, or belong to a domain with no mail server. Each address is checked in real time and comes back with its verdict: Accepted, Rejected, Catch-All, Disposable, No MX and more.

## Input

```json
{
  "emails": [
    "info@apple.com",
    "hello@stripe.com",
    "no.such.user.2026@gmail.com"
  ],
  "maxConcurrency": 20
}
```

## Output

```json
{
  "position": {
    "label": "#",
    "format": "integer"
  },
  "email": {
    "label": "Email",
    "format": "string"
  },
  "result": {
    "label": "Result",
    "format": "string"
  },
  "message": {
    "label": "Verdict",
    "format": "string"
  },
  "code": {
    "label": "Code",
    "format": "string"
  },
  "domain": {
    "label": "Domain",
    "format": "string"
  },
  "mx": {
    "label": "Mail server",
    "format": "string"
  },
  "checkedAt": {
    "label": "Checked at",
    "format": "string"
  }
}
```

## How it works

### 1. Sign up on Apify or log in

The MailTester Ninja Email Verifier Actor is ready to run with the inputs already set for "Detect catch-all and disposable emails". [Sign up or log in](https://console.apify.com/create-task-from-example/paVO5Fk5cpi4Np1tg) and you'll land in Apify Console with a copy of this exact task.

### 2. Start the "Detect catch-all and disposable emails" task

The MailTester Ninja Email Verifier Actor will start running based on the input automatically. You can also change all the input fields, like email addresses and maximum parallel checks, to match your specific use case.

### 3. Receive the "Detect catch-all and disposable emails" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as #, email, result, and more.

### 4. Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also [run the "Detect catch-all and disposable emails" task via API](https://apify.com/mailtester-ninja/email-verifier.md).

## FAQ

### What is a catch-all domain?

A catch-all domain accepts mail for every address, existing or not, so a check cannot confirm a mailbox there. This task returns these addresses as risky with the verdict Catch-All.

### How does this task detect disposable emails?

This task compares each domain with a list of disposable email providers kept up to date by MailTester Ninja, and returns these addresses as invalid with the verdict Disposable.

### What does this task cost?

This task adds no charge of its own: you only pay the Apify usage of the run, which stays tiny. It needs a MailTester Ninja key, either a free API token (50 checks a day) or a plan from $6.99 a week for 100,000 checks a day.

### Does this task keep my email addresses?

MailTester Ninja keeps no copy of the addresses you verify. The results of this task stay in your own Apify storage, under your control.

## About this Actor

This example demonstrates how to use [MailTester Ninja Email Verifier](https://apify.com/mailtester-ninja/email-verifier.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/mailtester-ninja/email-verifier.md) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

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

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 full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/mailtester-ninja/email-verifier.md

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`).