> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.mailerfind.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# MillionVerifier Integration

Connect Mailerfind with MillionVerifier so you can validate email lists and ensure that the emails you use are valid and active.

### What is MillionVerifier?

MillionVerifier is an **email verification service**, designed to optimize email deliverability and safeguard sender reputation by ensuring that mailings are sent to valid and active email addresses.

### What will you need?

* The integration is available for all Mailerfind plans.
* You need a MillionVerifier account to connect it with Mailerfind. [You can create an account here](https://app.millionverifier.com/register).

### Activate the integration

* From the Mailerfind control panel, go to [integrations.](https://app.mailerfind.com/integrations)
* Find MillionVerifier.
* Click on "Connect".

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_osvxgh.png)

* Enter your API Key.

### Where do I find my API Key?

You will find your MillionVerifier API Key by following these steps:

* Go to your [MillionVerifier account.](https://app.millionverifier.com/login)
* Click on your profile picture (top right).
* Click on "Account settings".

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_kub0gw.png)

* Go to the tab that says API KEYS and copy the key.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_rwsbz7.png)

* Paste it into Mailerfind and click "Connect".

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_1kmbdg1.png)

### What to do next?

Next, you can validate the emails obtained with the Mailerfind tool before sending your campaign.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_kextxs.png)

### How do I disconnect or undo the integration?

To disconnect the integration, you must do the following:

* From the Mailerfind control panel, go to [integrations.](https://app.mailerfind.com/integrations)
* Find MillionVerifier.
* Click on "Unlink".

![](https://storage.crisp.chat/users/helpdesk/website/-/7/9/0/d/790d24eabe0d6400/image_1efv98z.png)