Mailchimp for WooCommerce vs Site Mailer – SMTP Replacement, Email… (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Mailchimp for WooCommerce
200K+ active installs
Free
Site Mailer – SMTP Replacement, Email…
200K+ active installs
Free
Quick Verdict
As of April 2026, Mailchimp for WooCommerce has a higher user rating (4/5 from 726 reviews) and leads in active installations (200K+ vs 200K+). Both are free WordPress plugins. Mailchimp for WooCommerce has accumulated 23M+ total downloads while Site Mailer – SMTP Replacement, Email… has 1.8M+. Site Mailer – SMTP Replacement, Email… has a higher support resolution rate (100% vs 43%).
Detailed Comparison
| Metric | Mailchimp for WooCommerce | Site Mailer – SMTP Replacement, Email… | |
|---|---|---|---|
| Rating | 4/5 | ◄ | 2.2/5 |
| Total Reviews | 726 | ◄ | 14 |
| Active Installs | 200K+ | 200K+ | |
| Total Downloads | 23M+ | ◄ | 1.8M+ |
| Support Resolution | 43% | ► | 100% |
| Last Updated | 1 week ago | ◄ | 1 month ago |
| First Released | 2016 | 2024 | |
| Age | 10 years | 2 years | |
| WP Requires | 6.2+ | 6.6+ | |
| PHP Requires | 7.4+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 6.0.2 | 1.4.3 |
Rating Breakdown
Mailchimp for WooCommerce
Site Mailer – SMTP Replacement, Email…
Download Trends
Over the past 30 days, Mailchimp for WooCommerce averaged approximately 12,423 daily downloads while Site Mailer – SMTP Replacement, Email… averaged 2,033.
Recent Reviews
Mailchimp for WooCommerce Reviews
doesn’t work and support can’t fix it
Doesn’t work (ie the subscribe on check out doesn’t actually add people to my mailchimp audience even if customer has the box ticked) and mailchimp support doesn’t seem to be able to help. Seems mailc
Not good value for money
From 500 to 250 Contacts. Deinstallation. No way.
constant banner error
I have a banner in my admin pages stating I’m not connected to a Mailchimp account. Yet when I click the link, takes me right to my dashbaord.
Site Mailer – SMTP Replacement, Email… Reviews
Site Mailer Glitch
I’ve been using Site Mailer for a while now. But I installed it for a new client and the plugin is not working. “Sorry there was a glitch. Try refreshing the page. if that does not resolve the issue t
it forces you to set a Reply-To address
I’m unfortunately not satisfied with Site Mailer because it forces you to set a Reply-To address in the plugin settings. There is no option to leave this field empty. For websites that use advanced
Installed without my consent
This plugin suddenly appeared on my site without me ever installing it. I can only assume it was pushed through an Elementor update, which is completely unacceptable behavior. Plugins should never
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Frequently Asked Questions
Is Mailchimp for WooCommerce or Site Mailer – SMTP Replacement, Email… more popular?
Which has better ratings — Mailchimp for WooCommerce or Site Mailer – SMTP Replacement, Email…?
Are Mailchimp for WooCommerce and Site Mailer – SMTP Replacement, Email… free?
Which plugin has better support — Mailchimp for WooCommerce or Site Mailer – SMTP Replacement, Email…?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.