Description
ConvertKit connects Ninja Forms forms to the ConvertKit service, triggering the submission of contact data collected in the form fields to lists, forms, or email flows configured in the account. With this extension, those who use forms to capture leads, registrations, or content requests organize subscriber intake without manually copying information between the site and the email marketing platform.
Main Features of ConvertKit
- Connection with ConvertKit
Links Ninja Forms forms to the email service account. - Contact submission
Transfers data submitted in the form for registration in ConvertKit. - Field mapping
Associates form fields with data used in email marketing. - Post-submission action
Triggers the integration when the visitor submits the form. - Flow in Ninja Forms
Adds the integration to the standard form creation process.
Benefits of ConvertKit
- More organized capture
Reduces rework by registering contacts directly in the email tool. - Less manual copying
Prevents transferring leads between spreadsheets, forms, and external lists. - Clear marketing routine
Centralizes new contacts into a predictable relationship flow. - More useful forms
Transforms regular submissions into entry points for campaigns.
Who is ConvertKit For?
- Those who use Ninja Forms to capture leads and want to send them to ConvertKit.
- You who collect registrations for newsletters, free materials, or waiting lists.
- Those who need to link website forms to existing email marketing flows.
How to Download ConvertKit
ConvertKit is available for download here on Ultrapack. After downloading the .zip file, install it at Plugins > Add New > Upload plugin, select the file, and activate it. Since it is an addon, keep Ninja Forms installed and active on WordPress.
ConvertKit makes sense when the form should not end only with an internal notification but feed a contact base for ongoing relationship. By connecting Ninja Forms submission to ConvertKit, the site starts registering leads more consistently and keeps capture aligned with email marketing campaigns.
Frequently asked questions
Is Ninja Forms ConvertKit GPL-licensed?
Yes. Ninja Forms ConvertKit is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.
Can I use Ninja Forms ConvertKit on multiple sites?
Yes. You can install Ninja Forms ConvertKit on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.
How much does Ninja Forms ConvertKit cost at Ultrapack?
Ninja Forms ConvertKit costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).
Does Ninja Forms ConvertKit include updates?
Yes. The current version of Ninja Forms ConvertKit is 3.1.3, published at Ultrapack on Sep 4, 2025. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).
Is Ninja Forms ConvertKit scanned before publication?
Yes. Every version of Ninja Forms ConvertKit goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.
How to install
Automatic updates: this item is updated by the Ultrapack Auto Updater. With it installed, the new version shows up in your dashboard like any other WordPress update (how to set it up).
- Download the file
ninja-forms-convertkit.zip. - In the WordPress dashboard, go to Plugins > Add New > Upload Plugin.
- Select the file
ninja-forms-convertkit.zipand click Install Now. - Click Activate.
Stuck on a step? Open a ticket telling us which one you stopped at.

UAU Ready