by Danny van Kooten 4.8 (1,497 reviews)

MC4WP: Mailchimp for WordPress

Name: MC4WP: Mailchimp for WordPress
Rating: 4.8 (1497 reviews)
Author: Danny van Kooten

The #1 Mailchimp plugin for WordPress. Allows you to add a multitude of newsletter sign-up methods to your site.

MC4WP ranks #34 among WordPress.org plugins with 1,000,000+ active installations, is #3 of 3,342 in the Communication category, a 4.8/5 rating from 1,497 reviews, and was last updated Sep 10, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 7 (Current: 7.1)

v4.14.1 Current Version v4.14.1

Updated 5 days ago Last Update on 10 Sep, 2026

Refreshed 11 hours ago Last Refreshed on

#3 of 3,342 in Communication Top 1% by installs Downloads +613.5% this week Actively maintained

View on WordPress.org

Rank

#34

— No change

Active Installs

1M+

-47.1%

KW Avg Position

12.4

0.2 worse

Downloads

73.1M

+13,169 today

Support Resolved

100%

— No change

Rating

96%

Review 4.8 out of 5

4.8 (1,497 reviews)

Next Milestone 2M

Total Progress 87.2%

1M+ 2M+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Need 128,206 more installs to reach 2M+

Rank Changes

Current #34

Change

Best #

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.8

1,497 reviews

Overall 96%

1,377 (92%)

42 (3%)

19 (1%)

10 (1%)

49 (3%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

100%

Resolution Rate

Security History

Source: WPVulnerability

19 known vulnerabilities on record · 4 in the last 24 months · checked 1 week ago

Mar 10, 2026

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.12.0

CVE-2026-1781 · Fixed in v4.12.0
Mar 10, 2026

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.12.1

CVE-2026-4561 · Fixed in v4.12.1
Sep 20, 2024

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.9.17

CVE-2024-8680 · Fixed in v4.9.17
Sep 18, 2024

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] >= 4.9.9 - <= 4.9.16

CVE-2024-8850 · Affected >= 4.9.9 <= 4.9.16
Dec 27, 2023

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.9.10

CVE-2023-51682 · Fixed in v4.9.10
Mar 2, 2022

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.7

Fixed in v4.8.7
Mar 2, 2022

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.7

CVE-2021-36833 · Fixed in v4.8.7
Jun 1, 2021

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5

Fixed in v4.8.5
Jun 1, 2021

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5

Fixed in v4.8.5
Jun 1, 2021

MC4WP: Mailchimp for WordPress [mailchimp-for-wp] < 4.8.5

Fixed in v4.8.5

Showing the 10 most recent of 19 records.

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Plugin Details

Version: 4.14.1
Last Updated: Sep 10, 2026
Requires WP: 5.3+
Tested Up To: 7
PHP Version: 7.4 or higher
Author: Danny van Kooten

Support & Rating

Rating: ★ ★ ★ ★ ★ 4.8
Reviews: 1,497
Support Threads: 1
Resolved: 100%

Keywords

email form mailchimp newsletter subscribe

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to grow a Mailchimp email list. It solves the problem of adding newsletter sign-up forms and connecting Mailchimp to existing site forms without needing custom code.

Connect Mailchimp account
Customizable sign-up forms
WordPress Comment Form integration
WordPress Registration Form integration
Contact Form 7 integration
WooCommerce integration
Gravity Forms integration
PHP API for custom integration

Frequently Asked Questions

Common questions about MC4WP: Mailchimp for WordPress

You can find your Mailchimp API key here

Use the [mc4wp_form] shortcode or the Gutenberg block.

Go to Appearance > Widgets and use the Mailchimp for WP Form widget that comes with the plugin.

Use the following shortcode in your CF7 form to display a newsletter sign-up checkbox. [mc4wp_checkbox "Subscribe to our newsletter?"] Our knowledge base has more information on connecting Contact Form 7 and Mailchimp.

If the form shows a success message, there is no doubt that the sign-up request succeeded. Mailchimp could have a slight delay sending the confirmation email though. Please check again in a few minutes (sometimes hours) and don't forget to check your junk folder too. When you have double opt-in disabled, new subscribers will be seen as imports by Mailchimp. They will not show up in your daily digest emails or statistics. We always recommend leaving double opt-in enabled.

You can use custom CSS to style the sign-up form if you do not like the themes that come with the plugin. The following selectors can be used to target the various form elements. .mc4wp-form { ... } /* the form element */ .mc4wp-form p { ... } /* form paragraphs */ .mc4wp-form label { ... } /* labels */ .mc4wp-form input { ... } /* input fields */ .mc4wp-form input[type="checkbox"] { ... } /* checkboxes */ .mc4wp-form input[type="submit"] { ... } /* submit button */ .mc4wp-alert { ... } /* success & error messages */ .mc4wp-success { ... } /* success message */ .mc4wp-error { ... } /* error messages */ You can add your custom CSS to your theme stylesheet or (easier) by using a plugin like Simple Custom CSS

We recommend the Boxzilla pop-up plugin for this. You can use the form shortcode in your pop-up box to show a sign-up form.

You can use our WooCommerce integration for that. How to subscribe to Mailchimp from the WooCommerce checkout form.

You can find instructions for connecting your WooCommerce store with Mailchimp on our website. I'm getting an "HTTP Error" when trying to connect to Mailchimp. the "HTTP Error" type is usually because of a firewall configuration issue or outdated software on your web server. Please contact your webhost and ask them to check the following: Whether remote HTTP requests to https://api.mailchimp.com are allowed. Whether cURL and the PHP-cURL extension are installed and updated to a recent version.

Please report security bugs found in the source code of the Mailchimp for WordPress plugin through the Patchstack Vulnerability Disclosure Program. The Patchstack team will assist you with verification, CVE assignment, and notify the developers of this plugin. My question is not listed here. Please search through our knowledge base.