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…

WP Mail SMTP by WPForms – The Most…

4.8(5,089)

4.0M+ active installs

Free

Updated 4 months ago
View WP Mail SMTP by WPForms – The Most…
VS
Kit (formerly ConvertKit) for…

Kit (formerly ConvertKit) for…

5(6)

4.0K+ active installs

Free

Updated 4 days ago
View Kit (formerly ConvertKit) for…

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

Rating
4.8/5WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…5/5
Total Reviews
5,089WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…6
Active Installs
4.0M+WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…4.0K+
Total Downloads
76M+WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…354K+
Support Resolution
88%WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…100%
Last Updated
4 months agoWP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…4 days ago
First Released
2007WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…2016
Age
19 yearsWP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…10 years
WP Requires
5.5+WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…5.0+
PHP Requires
7.4+WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…7.1+
Business Model
FreeWP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…Free
Latest Version
4.7.1WP Mail SMTP by WPForms – The Most…
Kit (formerly ConvertKit) for…2.1.2

Rating Breakdown

WP Mail SMTP by WPForms – The Most…

4.8/5(5,089 reviews)
5
94%
4
1%
3
1%
2
1%
1
3%

Kit (formerly ConvertKit) for…

5/5(6 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

WP Mail SMTP by WPForms – The Most… Reviews

by marenaso

Great plugin!

Easy to install and configure. Works like a charm!

by dome0013

Love it

easy and reliable

by janell12

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

by Chris Allen

Awesome Tool

Increases my conversions and makes life easier!

by actdree

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

by nickdevore

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

Frequently Asked Questions

Is WP Mail SMTP by WPForms – The Most… or Kit (formerly ConvertKit) for… more popular?
WP Mail SMTP by WPForms – The Most… has 4.0M+ active installations while Kit (formerly ConvertKit) for… has 4.0K+. WP Mail SMTP by WPForms – The Most… is the more widely-used plugin as of April 2026.
Which has better ratings — WP Mail SMTP by WPForms – The Most… or Kit (formerly ConvertKit) for…?
WP Mail SMTP by WPForms – The Most… has a 4.8/5 rating from 5,089 reviews, while Kit (formerly ConvertKit) for… has a 5/5 rating from 6 reviews.
Are WP Mail SMTP by WPForms – The Most… and Kit (formerly ConvertKit) for… free?
WP Mail SMTP by WPForms – The Most… is free and Kit (formerly ConvertKit) for… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — WP Mail SMTP by WPForms – The Most… or Kit (formerly ConvertKit) for…?
As of April 2026, WP Mail SMTP by WPForms – The Most… has a 88% support resolution rate while Kit (formerly ConvertKit) for… has a 100% rate.
Which plugin is updated more frequently?
WP Mail SMTP by WPForms – The Most… was last updated 4 months ago and Kit (formerly ConvertKit) for… was last updated 4 days ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.