Works with your stack
Cookie consent for MC4WP: Mailchimp for WordPress
forms that set nothing
MC4WP adds Mailchimp sign-up forms to your site. The forms set no cookie and keep nothing in the browser: the address goes to Mailchimp from your server when the visitor subscribes. Only its optional site tracking adds a Mailchimp script to every page.
By ibericode BV · mc4wp.com · WordPress.org
Is this your product? Tell us if anything here is out of date. Write to us
MC4WP: Mailchimp for WordPress
WordPress plugin
- Tested version
- 4.15.0
- How
- Tested automatically around each Cookie Rocks version
- Last test
- 7 November 2026
- Latest version
- 4.15.0 tested
- Active installs
- 1,000,000+
What MC4WP: Mailchimp for WordPress adds to your visitors’ browser
No trackers In our test of MC4WP: Mailchimp for WordPress 4.15.0 on 7 November 2026, the plugin itself added no tracker and no cookie. What you place in your pages with it, such as a video or a map, still counts.
What matters for consent with MC4WP: Mailchimp for WordPress
The form itself asks nothing
A sign-up form from MC4WP stores nothing in the browser. The visitor sends the address on purpose, and your server passes it to Mailchimp.
Site tracking is another matter
With site tracking on, Mailchimp’s script loads on every page, with no setting in MC4WP to wait for consent. It is marketing, so it should wait for the visitor’s choice. Cookie Rocks holds known trackers until consent.
A sign-up can miss its match
After a sign-up, MC4WP tells the Mailchimp script who subscribed only if that script is already running. If the script waits for consent and starts later on the same page, that match is lost. The subscription itself is not.
Works with a page cache
The forms do not rely on a one-time security token, so a cached page still sends them.
What our tests found on MC4WP: Mailchimp for WordPress
Good to know · MC4WP: Mailchimp for WordPressMC4WP Mailchimp forms set no cookie and store nothing in the browser
The forms work on cached pages. Form data is sent to Mailchimp by the server when the form is submitted.
Read in its code, 16 October 2026, MC4WP: Mailchimp for WordPress 4.14.1.
Full detail
MC4WP: Mailchimp for WordPress 4.14.1 contains no setcookie, document.cookie, localStorage, sessionStorage, IndexedDB, WP Consent API or gtag('consent') code (outside minified and vendor files). Forms use a timestamp field accepted for 90 days instead of a nonce, so they work on cached pages. Form data is sent to Mailchimp by the server on submission.
Depends on a setting · MC4WP: Mailchimp for WordPressMC4WP's tracking pixel loads on every page with no wait for consent
setting “Enable Site Tracking” · by default: off
Off by default. After a sign-up, the email is sent to Mailchimp only if the pixel is already loaded, so it is lost if the pixel is held and accepted later on that page.
Read in its code, 16 October 2026, MC4WP: Mailchimp for WordPress 4.14.1.
Full detail
MC4WP's Site Tracking Pixel (off by default) enqueues Mailchimp's script chimpstatic.com/mcjs-connected/js/users/<id>.js (handle mc4wp-mailchimp-site-tracking-pixel, defer) on every public page, with no setting to wait for consent. After a sign-up, an inline footer script calls $mcSite.pixel.api.identify with the subscriber's email only if the pixel is already loaded, so it is lost if the pixel is held and accepted later on the same page.
How we test it
Around each version, with its latest release
Around each Cookie Rocks version, a fresh WordPress installs its latest version from WordPress.org next to Cookie Rocks and runs the same checks. A new version joins the next run on its own.
- MC4WP: Mailchimp for WordPress 4.15.0, tested on 7 November 2026.
- The banner shows, the trackers of the test page wait for consent and load after it, and Cookie Rocks raises no PHP error.
- Settings of the test: Default settings after activation.
- Last run: MC4WP: Mailchimp for WordPress 4.15.0 on 7 November 2026, with WordPress 7.1.3.
Newsletters and popups
Other plugins of the same kind.
Questions
Do I need site tracking?
Only if you use Mailchimp’s website features. It is off until you turn it on. Without it, MC4WP adds nothing to consent.
What happens after the 30-day trial?
The banner, your visitors’ choices and your proofs of consent keep working. Without a key, most settings lock, updates and support stop. Take a key at any time and everything opens again.
For MC4WP users
Sign-up forms stay open to everyone.
the form is not the tracker
Every feature of the complete plugin for 30 days, no card. MC4WP keeps working as it does today.
- During the trial: everything, including the full settings and the scans
- After 30 days without a key: the banner, your visitors’ choices and your proofs of consent keep working
- What waits for a key: most settings, updates and support
Get your trial key
Your e-mail and your site. Your key arrives as soon as you confirm your e-mail.