MC4WP: Mailchimp for WordPress

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. The recent download trend is too spiky to read.

Reviewers keep praising easy setup and reliable Mailchimp integration, with only minor gripes about a confusing first-time setup and wanting more design options.

1. ★★★★★ nschouinc

   1mo ago

   Connected my list in a few minutes, forms match my site’s styling without extra tweaking, and double opt-in works as expected. No complaints so far.

   Read on wp.org ↗
2. ★★★★★ De Harris

   2mo ago

   We have been using MC4WP for almost a year now, and I am so pleased how it has been working for us. It was easy to integrate and set up. No issues, so I highly recommend you use it for your site.

   Read on wp.org ↗
3. ★★★★★ Nonos

   3mo ago

   Clean, stable and updated regularly

   Read on wp.org ↗
4. ★★★★★ James

   4mo ago

   I’ve been using this for a long time to add subscribers to Mailchimp both on a form and in the Woocommerce checkout. I recently encountered a problem experimenting with the Woocommerce block-based checkout and M4CWP support were great. Highly recommended plugin.

   Read on wp.org ↗
5. ★★★★★ Reyna

   5mo ago

   Tried Mailchimp for WordPress for my forms. It connects fine and does the basic job. But the setup felt a bit confusing at times. Works ok overall, but could be simpler and smoother.

   Read on wp.org ↗
6. ★★★★★ Clark W

   5mo ago

   Simple, powerful, and exactly what we needed. Solved our problem without the usual headaches.

   Read on wp.org ↗
7. ★★★★★ Bentomen

   6mo ago

   Good plugin for connecting Mailchimp with WP. Setup was pretty easy and forms started collecting emails without much hassle. UI is clean too. A few more design options would be nice, but overall works well.

   Read on wp.org ↗
8. ★★★★★ 4mifix

   6mo ago

   I like it so far and will update this review as time goes on.

   Read on wp.org ↗

Recent releases and news for this plugin

1. — Version 4.13.1 Release date: Jun 22, 2026 Forms: Improve handling of pasted wrapper tags in form content. Forms: Remove mc4wp_default_form_id option. We now default to first available form. Forms: Improve the {email} dynamic content ta 4.13.1
2. — Version 4.13.0 Release date: Jun 1, 2026 Improve performance by preloading core plugin classes and skipping dynamic content tag parsing when no tags are present. Improve security for admin AJAX requests by adding a nonce check and stri 4.13.0
3. — Version 4.12.6 Release date: May 26, 2026 Fix integrations losing runtime options like double opt-in when sign-up attempts are processed asynchronously. Thanks Jon Parker ! Fix Site Tracking Pixel setting not being saved when disabling 4.12.6
4. — Version 4.12.5 Release date: May 8, 2026 Fix fatal error on plugin activation in some cases when wp_rand() returns a value below 10 for the minute part. Thanks Tim Carr ! View the full changelog on GitHub 4.12.5
5. — Version 4.12.3 Release date: May 5, 2026 Improved Mailchimp Site Tracking Pixel support. Site is now automatically discovered or registered in Mailchimp when feature is enabled. Sign-up attempts for integrations are now processed async 4.12.3
6. — Version 4.14.0 Release date: Aug 4, 2026 Integrations: Show the sign-up checkbox on the admin “Add New User” form. Thanks arnelap ! Misc: Add a code snippet for sending the WordPress username to Mailchimp with User Sync. Misc: Update W 4.14.0

12 disclosed vulnerabilities on record for this plugin, all fixed in the current version. Sites on older versions stay exposed until they update.

1. Medium · 6.4 MC4WP: Mailchimp for WordPress <= 4.12.0 - Authenticated (Author+) Stored Cross-Site Scripting via Form Response Messages ↗
   2026-08-21 CVE-2026-4561 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.12.0 Patched in 4.12.1
2. Medium · 6.5 MC4WP: Mailchimp for WordPress <= 4.11.1 - Missing Authorization to Unauthenticated Arbitrary Subscription Deletion ↗
   2026-03-10 CVE-2026-1781 Missing Authorization Affects <= 4.11.1 Patched in 4.12.0
3. Medium · 4.4 MailChimp for Wordpress <= 4.9.16 - Authenticated (Administrator+) Stored Cross-Site Scripting ↗
   2024-09-20 CVE-2024-8680 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) Affects <= 4.9.16 Patched in 4.9.17
4. Medium · 6.1 MC4WP: Mailchimp for WordPress 4.9.9 - 4.9.16 - Reflected Cross-Site Scripting ↗
   2024-09-18 CVE-2024-8850 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects 4.9.9 - 4.9.16 Patched in 4.9.17
5. Medium · 5.3 MC4WP <= 4.9.9 - Missing Authorization via listen ↗
   2023-12-27 CVE-2023-51682 Missing Authorization Affects <= 4.9.9 Patched in 4.9.10
6. Medium · 5.5 MC4WP: Mailchimp for WordPress <= 4.8.6 - Authenticated (Admin+) Stored Cross-Site Scripting ↗
   2022-03-02 CVE-2021-36833 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.8.6 Patched in 4.8.7
7. Medium · 5.5 MC4WP: Mailchimp for WordPress < 4.8.7 - Cross-Site Scripting ↗
   2022-03-02 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects < 4.8.7 Patched in 4.8.7
8. High · 8.8 MC4WP: Mailchimp for WordPress <= 4.8.4 - Cross-Site Request Forgery ↗
   2021-06-01 Cross-Site Request Forgery (CSRF) Affects <= 4.8.4 Patched in 4.8.5
9. Medium · 6.1 MC4WP: Mailchimp for WordPress <= 4.8.4 - Open Redirect ↗
   2021-06-01 URL Redirection to Untrusted Site ('Open Redirect') Affects <= 4.8.4 Patched in 4.8.5
10. Medium · 6.1 MC4WP: Mailchimp for WordPress <= 4.1.6 - Reflected Cross-Site Scripting ↗
    2019-11-09 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.1.6 Patched in 4.1.7
11. Medium · 6.1 Mailchimp For WP <= 4.1.7 - Cross-Site Scripting ↗
    2017-09-08 CVE-2017-18577 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 4.1.7 Patched in 4.1.8
12. Medium · 6.1 MailChimp for WordPress <= 4.0.10 - Reflected Cross-Site Scripting ↗
    2016-12-13 CVE-2016-10871 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects < 4.0.11 Patched in 4.0.11

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0

Translated into 126 languages, 13 at 90% or more

Plus 102 more locales with partial translations.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2026-03-08 2M+ → 1M+ down

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• MailerLite – Signup forms (official) 100K+ installs · 3.2★ · 3 shared tags B
• Mailchimp List Subscribe Form 60K+ installs · 2.8★ · 3 shared tags B
• Genesis eNews Extended 40K+ installs · 4.4★ · 3 shared tags A
• BlossomThemes Email Newsletter 20K+ installs · 3.6★ · 3 shared tags B
• Mail Subscribe List 3K+ installs · 4.3★ · 3 shared tags D
• Block for Mailchimp – grow your email list with signup forms 2K+ installs · 3.9★ · 3 shared tags B

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MC4WP: Mailchimp for WordPress: 1M+ active installs, 4.8★ (1,496 reviews). Plugin Pulse (WP Mayor), as of 2026-08-25. https://plugins.wpmayor.com/plugin/mailchimp-for-wp