MC4WP: Mailchimp for WordPress vs Post SMTP – Complete Email… (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
Post SMTP – Complete Email…
400K+ active installs
Free + Premium
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 400K+). Both are free WordPress plugins. MC4WP: Mailchimp for WordPress has accumulated 73M+ total downloads while Post SMTP – Complete Email… has 18M+. MC4WP: Mailchimp for WordPress has a higher support resolution rate (89% vs 81%).
Detailed Comparison
| Metric | MC4WP: Mailchimp for WordPress | Post SMTP – Complete Email… | |
|---|---|---|---|
| Rating | 4.8/5 | ◄ | 4.7/5 |
| Total Reviews | 1,492 | ◄ | 518 |
| Active Installs | 1.0M+ | ◄ | 400K+ |
| Total Downloads | 73M+ | ◄ | 18M+ |
| Support Resolution | 89% | ◄ | 81% |
| Last Updated | 1 week ago | ► | 3 days ago |
| First Released | 2013 | 2017 | |
| Age | 13 years | 9 years | |
| WP Requires | 4.6+ | 5.6.0+ | |
| PHP Requires | 7.4+ | 7.0+ | |
| Business Model | Free | Free + Premium | |
| Latest Version | 4.12.1 | 3.9.1 |
Rating Breakdown
MC4WP: Mailchimp for WordPress
Post SMTP – Complete Email…
Download Trends
Over the past 30 days, MC4WP: Mailchimp for WordPress averaged approximately 39,723 daily downloads while Post SMTP – Complete Email… averaged 11,652.
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.
Post SMTP – Complete Email… Reviews
Critical and high severity vulnerabilities over and over again
We’ve been using Post SMTP for years. Initially, we started with WP Mail SMTP, but the free version didn’t include logging, while Post SMTP did, and that occasionally came in handy. So we switched to
Great Plugin
Great Plugin easy to config and troubleshoot.
Great Support for the setup of PostSMTP
Aqib was very helpful in setting up PostSMTP on my site. The plug-in is working very well.
More Email Worth Comparing
Top alternatives in the same category as MC4WP: Mailchimp for WordPress and Post SMTP – Complete Email…
Make email delivery easy for WordPress. Connect with SMTP, Gmail, Outlook, SendGrid, Mailgun, SES, Zoho, + more. Rated #1 WordPress SMTP Email plugin.
Make SMTP email sending and delivery easy. Configure Gmail, Outlook, Brevo, SendGrid, Mailgun, SendLayer or connect to any SMTP server.
Creative Mail was designed specifically for WordPress and WooCommerce. Our intelligent (and super fun) email editor simplifies email marketing campaig …
Log, view, and resend all emails sent from your WordPress site. Great for resolving email sending issues or keeping a copy for auditing.
SureMail – SMTP and Email Logs Plugin with Amazon SES, Postmark, and Other Providers
Effortlessly manage transactional emails with Site Mailer. High deliverability, logs and statistics, and no SMTP plugins needed.
Frequently Asked Questions
Is MC4WP: Mailchimp for WordPress or Post SMTP – Complete Email… more popular?
Which has better ratings — MC4WP: Mailchimp for WordPress or Post SMTP – Complete Email…?
Are MC4WP: Mailchimp for WordPress and Post SMTP – Complete Email… free?
Which plugin has better support — MC4WP: Mailchimp for WordPress or Post SMTP – Complete Email…?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.