JetFormBuilder has a free version available. The Pro version starts at $39/year and is needed to run integrations.
You can find their pricing details here.
Get in contact with Crocoblock.
JetFormBuilder is a dynamic WordPress form builder for registration, user profile, contact, subscription, appointment booking, and applications. Their builder allows you to create and style every component from backend to frontend, along with custom HTML.
When integrating MailerLite with JetFormBuilder, you can collect customer or subscriber data, automatically sync it to your email list, and send them targeted marketing campaigns.
On the Pro version of JetFormBuilder, head to a new or existing form on the WordPress dashboard.
Go to the MailerLite Post-Submit action and click Edit.
Enter your MailerLite API key, which you can find on your Developer API page.
After the API key has been validated, select the MailerLite group where your subscribers will be added upon sign-up.
Under the Fields Map section, map your form’s fields with your MailerLite fields.
Click Update once done.