WP Mail SMTP by WPForms – The Most… vs Kit (formerly ConvertKit) for… (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
WP Mail SMTP by WPForms – The Most…
4.0M+ active installs
Free
Kit (formerly ConvertKit) for…
4.0K+ active installs
Free
Quick Verdict
As of April 2026, Kit (formerly ConvertKit) for… has a higher user rating (5/5 from 6 reviews) while WP Mail SMTP by WPForms – The Most… leads in active installations (4.0M+ vs 4.0K+). Both are free WordPress plugins. WP Mail SMTP by WPForms – The Most… has accumulated 76M+ total downloads while Kit (formerly ConvertKit) for… has 354K+. Kit (formerly ConvertKit) for… has a higher support resolution rate (100% vs 88%).
Detailed Comparison
| Metric | WP Mail SMTP by WPForms – The Most… | Kit (formerly ConvertKit) for… | |
|---|---|---|---|
| Rating | 4.8/5 | ► | 5/5 |
| Total Reviews | 5,089 | ◄ | 6 |
| Active Installs | 4.0M+ | ◄ | 4.0K+ |
| Total Downloads | 76M+ | ◄ | 354K+ |
| Support Resolution | 88% | ► | 100% |
| Last Updated | 4 months ago | ► | 4 days ago |
| First Released | 2007 | 2016 | |
| Age | 19 years | 10 years | |
| WP Requires | 5.5+ | 5.0+ | |
| PHP Requires | 7.4+ | 7.1+ | |
| Business Model | Free | Free | |
| Latest Version | 4.7.1 | 2.1.2 |
Rating Breakdown
WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…
Download Trends
Over the past 30 days, WP Mail SMTP by WPForms – The Most… averaged approximately 14,159 daily downloads while Kit (formerly ConvertKit) for… averaged 521.
Recent Reviews
WP Mail SMTP by WPForms – The Most… Reviews
Great plugin!
Easy to install and configure. Works like a charm!
Love it
easy and reliable
Does the Job, Needs Improvement
WP Mail SMTP by WPForms works well for email delivery, with easy setup. However, it lacks some advanced features and customization. 4 stars! This topic was modified 2 days, 1 hour ago by janel
Kit (formerly ConvertKit) for… Reviews
Awesome Tool
Increases my conversions and makes life easier!
Love ConvertKit
I’ve been using ConvertKit for three years now, and after having used several other e-mail providers, I have no intention of switching to another provider anytime soon. They make sending out e-mails
Easiest Way to Connect Woo Commerce to ConvertKit
This little plugin makes it very easy to connect to ConvertKit from any WooCommerce product. You can pick a tag, sequence, or form to submit the data to when that product is purchased. And, if you a
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Frequently Asked Questions
Is WP Mail SMTP by WPForms – The Most… or Kit (formerly ConvertKit) for… more popular?
Which has better ratings — WP Mail SMTP by WPForms – The Most… or Kit (formerly ConvertKit) for…?
Are WP Mail SMTP by WPForms – The Most… and Kit (formerly ConvertKit) for… free?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.