Plugin
Updated
ConvertKit
Ninja Forms ConvertKit by The WP Ninjas is an add-on plugin that connects Ninja Forms to Kit, the email marketing platform formerly called ConvertKit. When someone submits a form, their details go straight to your Kit account as a subscriber, with tags, sequences and custom fields applied.
- Version
- 3.1.3
- Released
- Sep 2, 2025
- Developer
- Ninja Forms
- Type
- WordPress plugin
- Requires
- Ninja Forms
- Licence
- GPL
- Included in
- Every plan, or $4.79 a year on its own
What’s new in ConvertKit 3.1.3
Version 3.1.3 · Sep 2, 2025
Latest
- FixedBug Fixes: Ensure required variables populated to prevent errors
- FixedBug Fixes: Fix Duplicate Settings in ConvertKit Actions
- FixedBug Fixes: Fix timing for text domains
- FixedBug Fixes: Ensure data populates in ConvertKit after submission
- NewBug Fixes: Add `required` indicator for required fields
What it does
Collecting email signups through a WordPress form often means exporting entries and adding them to your email platform by hand, or wiring up a custom integration. This add-on removes that step. It works with Ninja Forms, which it requires, and sends each submission to Kit automatically. You map your form fields to subscriber emails, tags, sequences and custom fields, so the data arrives in Kit organized the way you want it, with no custom code involved.
The setup lives inside Ninja Forms as a form action. Each action can use its own Kit credentials, so one site can feed different Kit accounts, which helps if you run several brands or campaigns. Tags and sequence assignments can be applied based on what people submit, so new subscribers land in the right segment from the start. If something isn't syncing, you can debug the connection through your Kit account API. It suits bloggers and online entrepreneurs who build their list with Ninja Forms.
Best for
- Bloggers growing an email list with Kit
- Online entrepreneurs using Ninja Forms for lead capture
- Agencies managing several brands on separate Kit accounts
Features
Automatic subscriber sync
Form submissions are sent to your Kit account as subscribers automatically, so you no longer need to copy entries over by hand.
Field mapping
Map subscriber emails, tags, sequences and custom fields to your form fields so each detail is captured in Kit exactly as you set it up.
Tags and sequences
Apply tags and add subscribers to chosen sequences based on their form submissions, letting you segment your audience as they sign up.
Per-action account credentials
Use action-level credentials to connect different Kit accounts to different form actions, which is handy for managing separate brands or campaigns.
API debugging
Troubleshoot integration problems through your Kit account API to check that form data is reaching Kit correctly.
Required field indicators
Required settings in the Kit action are marked, making it clear which fields you need to fill in before the integration works.
No custom coding
The integration is configured within Ninja Forms, so you can connect forms to Kit without writing code or maintaining a custom setup.
ConvertKit older versions
- 3.1.2Jun 5, 20251 improvement, 1 fix, 1 security fix
- 3.1.1Apr 18, 20231 new
Members and buyers of this product can download older versions.
Questions about ConvertKit
Do I need Ninja Forms for this to work?
Yes. This is an add-on for Ninja Forms, so the Ninja Forms plugin must be on your site. The add-on adds a Kit action to your forms that sends submissions to your Kit account.
Is this the same as Kit, or is it for ConvertKit?
Both. ConvertKit is now known as Kit, and this add-on connects Ninja Forms to that platform. Your forms send subscriber data to your Kit account, including emails, tags, sequences and custom fields.
Can I send different forms to different Kit accounts?
Yes. The add-on supports action-level credentials, so each form action can connect to its own Kit account. That makes it practical to run multiple brands or campaigns from one WordPress site.
Can subscribers be tagged or added to a sequence automatically?
Yes. You can map tags and sequences to your form, and subscribers are tagged and added to the sequences you choose based on their submission, which keeps your list segmented from the first signup.
Is ConvertKit free?
The code of ConvertKit is licensed under the GPL, so anyone may use, change and share it. GPL Feast is a paid service: a plan or a single purchase gives you the download and automatic updates. The developer's own support, licence key and online services are not included.
Which version of ConvertKit is this?
Version 3.1.3, released Sep 2, 2025. New versions appear here when the developer publishes them, and members get them as automatic updates.
How do I update ConvertKit?
Install the free GPL Feast Updater on your site and connect it with your API key. It installs new versions of ConvertKit automatically and keeps a backup, so you can roll back.
What does ConvertKit need?
ConvertKit needs Ninja Forms installed and active.
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