Advanced Form Integration plugin allows you to integrate Ninja Forms to MailerLite. When a user fills a form on your website, the plugin will send the data to your MailerLite account and create a contact in the preferred group. You can also add custom merge fields.

ninja forms - forms
2 Sample Contact Forms

Supported Features

  • Create a new contact with all basic (First Name, Last Name, Email). Additionally supports merged custom fields. It also allows adding the contact to preferred group.


  • The feature requires a Pro license. BUY NOW!
  • Make sure that the Pro version of the Advanced Form Integration plugin is installed and activated. You should have got the links in the email after purchase. You can also download it anytime by logging into the user dashboard.
  • Read plugin documentation for Ninja Forms and MailerLite. It is not required but helpful for a better understanding.

Obtaining MailerLite API Key

Before start, you are required to save the API Key in plugin settings.

  1. Log in to your MailerLite account.
  2. Go to Integrations>Developer API
  3. Select Use.
  4. Copy API Key.
  5. Now go to AFI > Settings >MailerLite and paste the key.
  6. Click Save Changes.

Create New Integration

Once API keys are saved you can start creating new integration. Click on Add New under AFI menu, New Integration page will appear.


A default title will be auto-generated with an auto incremental number. You can rename it to something related to the task. It will help you to quickly recognize the correct one when there is multiple integrations setup.


Select Ninja Forms in Form Provider dropdown. Ninja Forms plugin must be installed and activated otherwise you won’t see it listed. After selecting Ninja Forms, all forms built under Ninja Forms will be fetched and auto-populated in the Form/Task Name dropdown. Select the form that you want to integrate.

ninja forms - form list
Ninja Forms – Trigger setup


Select MailerLite [PRO] in Platform dropdown.

Omnisend- New Integration

Map Fields

Map Fields section will appear where you’ll be able to determine which fields to send.Map Email, First Name, Last Name etc. fields with their similar field in sender platform. Finally, click the Save Integration button.

Omnisend- Map fields

Conditional Logic

Please check the documentation on Conditional Logic .

Frequently asked questions


Still need help?

Reach our support team at [email protected]

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