MC4WP: Mailchimp for WordPress vs Cart66 to Mailchimp (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
MC4WP: Mailchimp for WordPress
1.0M+ active installs
Free
Quick Verdict
As of April 2026, MC4WP: Mailchimp for WordPress has a higher user rating (4.8/5 from 1,492 reviews) and leads in active installations (1.0M+ vs 10). Both are free WordPress plugins. MC4WP: Mailchimp for WordPress has accumulated 73M+ total downloads while Cart66 to Mailchimp has 2.0K+.
Detailed Comparison
| Metric | MC4WP: Mailchimp for WordPress | Cart66 to Mailchimp | |
|---|---|---|---|
| Rating | 4.8/5 | ◄ | N/A |
| Total Reviews | 1,492 | ◄ | 0 |
| Active Installs | 1.0M+ | ◄ | 10 |
| Total Downloads | 73M+ | ◄ | 2.0K+ |
| Support Resolution | 89% | N/A | |
| Last Updated | 1 week ago | ◄ | 12 years ago |
| First Released | 2013 | 2013 | |
| Age | 13 years | 13 years | |
| WP Requires | 4.6+ | 2.8.2+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 4.12.1 | 1.4 |
Rating Breakdown
MC4WP: Mailchimp for WordPress
Cart66 to Mailchimp
Download Trends
Recent Reviews
MC4WP: Mailchimp for WordPress Reviews
Good but Limited
Works well for basic email setup & easy to connect with Mailchimp. UI is simple. But needs more flexibility in forms. Overall, a good plugin. tnx 👍
Simple Mailchimp Connect
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
Just Started Using This API
I like it so far and will update this review as time goes on.
Cart66 to Mailchimp Reviews
No reviews yet
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Frequently Asked Questions
Is MC4WP: Mailchimp for WordPress or Cart66 to Mailchimp more popular?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.