The Kit add-on needs to be installed and activated to see the features mentioned in this this documentation.
Connect to your Kit Account to Ninja Forms
In order to enable communication between your WordPress site and Kit (formerly known as ConvertKit) you need an API key to connect both system. The Kit API Key is available in the Kit Account Settings Page.

When in your Kit Account, click Developer and copy the V3 API key.
Then go to Ninja Forms > Settings > Kit and paste in your API key.

Send your Form Data to Kit
To add the action to any form, from the Emails & Actions tab click Add New Action and then the Kit action from inside the Actions Window that opens.

Configure the Kit action

To configure the Kit action within your form, you will require the subscriber email (using the email field you have placed in your form) and a form (a dummy form created in your Kit account).
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Proven Ways to Get More Newsletter Signups
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