Plugin
Updated
Ninja Forms MailChimp
Ninja Forms MailChimp by The WP Ninjas is an add-on plugin that links the Ninja Forms plugin to your Mailchimp account. It adds people who fill out your forms to the Mailchimp audiences, groups and tags you choose, so new subscribers arrive on your list without manual exports.
- Version
- 3.3.7
- Released
- Jan 19, 2026
- Developer
- Ninja Forms
- Type
- WordPress plugin
- Requires
- Ninja Forms
- Licence
- GPL
- Included in
- Every plan, or $5.59 a year on its own
What’s new in Ninja Forms MailChimp 3.3.7
Version 3.3.7 · Jan 19, 2026
Latest
- FixedFix jsonSerialize deprecation notice
- FixedFix dynamic property deprecation notice
- FixedFix call to function on null
- ChangedUpdate plugin information
What it does
Collecting email signups on a WordPress site often means copying contacts into Mailchimp by hand or settling for a fixed signup widget that does not match the rest of the site. This add-on works inside Ninja Forms, which it requires, so you build signup forms with the same form builder you already use. You connect your account with your Mailchimp API key, then pick an audience or group and map each form field to the matching Mailchimp field.
Because the forms are regular Ninja Forms, you can create as many as you need and place them wherever they make sense on your site. You can collect any data your Mailchimp lists and interest groups require, including tags and custom fields. Double opt-in can be turned on form by form, an opt-in checkbox lets visitors give consent, and conditional logic can route subscribers into specific lists or groups based on their answers. Custom confirmation messages tell people their signup worked.
Best for
- Ninja Forms users who send newsletters through Mailchimp
- Businesses segmenting subscribers into lists and interest groups
- Agencies building custom signup forms for client sites
Features
API key connection
Connect your WordPress forms to Mailchimp with your account's API key so form submissions sync to your mailing lists.
Unlimited signup forms
Build as many Mailchimp signup forms as you need and place them across your site, each styled and laid out to suit its spot.
Field mapping to audiences
Choose any Mailchimp audience or group and map each form field to the matching Mailchimp field, including tags and custom fields.
Per-form double opt-in
Turn double opt-in on or off for each form individually, so subscribers confirm their address before joining a list where you want that step.
Opt-in checkbox field
Add a Mailchimp opt-in checkbox that visitors tick to join your list, giving them a clear way to give consent.
Conditional list routing
Use conditional logic to send subscribers to specific lists or interest groups based on how they answer questions in the form.
Custom confirmation messages
Show or send your own confirmation message after a successful signup so visitors know their subscription went through.
List refresh
Refresh your connected Mailchimp lists from inside the plugin so newly created audiences and groups appear when you set up forms.
Ninja Forms MailChimp older versions
- 3.3.6Apr 18, 20231 change
Members and buyers of this product can download older versions.
Questions about Ninja Forms MailChimp
Do I need Ninja Forms for this to work?
Yes. This is an add-on for the Ninja Forms plugin, so Ninja Forms must be active on your site. The Mailchimp features are added to the forms you build there, and they can work alongside other Ninja Forms add-ons.
Can I sort subscribers into different Mailchimp groups?
Yes. You can map forms to any Mailchimp audience or interest group, apply tags, and use conditional logic to place subscribers in specific lists or groups based on their form responses.
Does it support double opt-in and consent checkboxes?
It does. Double opt-in can be enabled on a per-form basis, and you can add a Mailchimp opt-in checkbox that visitors select if they want to join your list.
Can my signup forms match my site's design?
The forms are built in Ninja Forms, so you can adjust styling, layout and field presentation without writing complicated CSS. You can also create multiple forms and place each one where it fits.
Is Ninja Forms MailChimp free?
The code of Ninja Forms MailChimp 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 Ninja Forms MailChimp is this?
Version 3.3.7, released Jan 19, 2026. New versions appear here when the developer publishes them, and members get them as automatic updates.
How do I update Ninja Forms MailChimp?
Install the free GPL Feast Updater on your site and connect it with your API key. It installs new versions of Ninja Forms MailChimp automatically and keeps a backup, so you can roll back.
What does Ninja Forms MailChimp need?
Ninja Forms MailChimp needs Ninja Forms installed and active.
More from Ninja Forms
