How MC4WP: Mailchimp for WordPress Affects Your WordPress Speed

Name: MC4WP: Mailchimp for WordPress
Rating: 4.8 (1490 reviews)
Author: MakeWPFast

Measured Speed Score

How is this scored?

Our Benchmark Methodology

Every speed score on MakeWPFast is based on real performance measurements, not estimates. We install each plugin on a clean WordPress 6.9 setup (PHP 8.3, MariaDB, GeneratePress theme) and measure the difference in three metrics:

TTFB (Time To First Byte) — how many milliseconds the plugin adds to server response time. This is the most important factor (50% of the score) because it directly affects every page load.

Memory usage — how much additional PHP memory the plugin consumes per request (30% of score). High memory usage can cause crashes on shared hosting.

Database queries — how many extra SQL queries the plugin runs per page load (20% of score). More queries mean more database work on every request.

Grade	What it means
A / A-	Negligible impact. Safe to install on any hosting.
B+ / B / B-	Light impact. Adds some overhead but manageable on most setups.
C+ / C / C-	Moderate impact. May noticeably slow down budget hosting.
D+ / D	Heavy impact. Will affect page load times. Consider alternatives.
F	Severe impact. Significant resource usage that hurts performance.

Plugins marked "Not Yet Tested" have not been benchmarked yet. We do not estimate or guess scores — if there is no measured data, there is no grade.

Note: Benchmarks measure a plugin in isolation on a clean install. Real-world impact varies based on your hosting, other plugins, and how the plugin is configured.

+-3 ms

TTFB Impact

+0 MB

Memory Impact

DB Queries

Low impact

Plugin Overview

Active Installs2M+

Rating4.8/5 (1,490)

Tested Up ToWP 6.9.1

Requires PHP7.4+

Last UpdatedJan 20, 2026

Downloads71.9M+

AuthorDanny van Kooten

WP.orgView on WordPress.org

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Add this performance badge to your site or README:

<a href="https://makewpfast.com/plugins/mailchimp-for-wp/"><img src="https://makewpfast.com/wp-json/mwf-pseo/v1/badge/mailchimp-for-wp" alt="MC4WP: Mailchimp for WordPress Speed Score - MakeWPFast" /></a>

Preview:

Performance Analysis

Performance Impact

MC4WP: Mailchimp for WordPress receives an estimated speed score of B. Our real benchmark tests measured the following impact when activating this plugin:

TTFB impact: +-3 ms
Memory impact: +0.0 MB
Additional DB queries: +2

Overall activation impact: low. This plugin adds minimal overhead to your WordPress site.

Maintenance Status

Last updated: 2026-01-20. Requires PHP 7.4+. Trusted by 2.0M+ active installations.

Benchmark data measured in an isolated Docker environment (WordPress 6.8, PHP 8.3, GeneratePress). See our full methodology.

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Alternatives to MC4WP: Mailchimp for WordPress

Plugin	Speed Score	Active Installs
Contact Form 7	A-	10M+
Akismet Anti-spam: Spam Protection	A	6M+
WPForms – Easy Form Builder for WordPress – Contact Forms, Payment Forms, Surveys, & More	A	6M+

Frequently Asked Questions

Does MC4WP: Mailchimp for WordPress slow down WordPress?

MC4WP: Mailchimp for WordPress has an estimated speed score of B. It has a moderate impact. Monitor your site speed after installation.

Is MC4WP: Mailchimp for WordPress still maintained?

MC4WP: Mailchimp for WordPress was last updated on 2026-01-20. It has 2.0M+ active installations, indicating it is actively maintained and widely trusted.

What are the best alternatives to MC4WP: Mailchimp for WordPress?

Check our plugin reviews in the Forms category for alternatives. We compare plugins side-by-side on speed, features, and user ratings to help you find the best fit.