Kit (formerly ConvertKit) – Email… vs Mailster WordPress Newsletter Plugin (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Kit (formerly ConvertKit) – Email…
40K+ active installs
Free
Mailster WordPress Newsletter Plugin
9.0K+ active installs
Free
Quick Verdict
As of April 2026, Kit (formerly ConvertKit) – Email… has a higher user rating (4.8/5 from 88 reviews) and leads in active installations (40K+ vs 9.0K+). Both are free WordPress plugins. Kit (formerly ConvertKit) – Email… has accumulated 4.2M+ total downloads while Mailster WordPress Newsletter Plugin has 41K+. Mailster WordPress Newsletter Plugin has a higher support resolution rate (100% vs 100%).
Detailed Comparison
| Metric | Kit (formerly ConvertKit) – Email… | Mailster WordPress Newsletter Plugin | |
|---|---|---|---|
| Rating | 4.8/5 | ◄ | 3.5/5 |
| Total Reviews | 88 | ◄ | 8 |
| Active Installs | 40K+ | ◄ | 9.0K+ |
| Total Downloads | 4.2M+ | ◄ | 41K+ |
| Support Resolution | 100% | 100% | |
| Last Updated | 4 days ago | ◄ | 1 year ago |
| First Released | 2015 | 2017 | |
| Age | 11 years | 9 years | |
| WP Requires | 5.6+ | 6.0+ | |
| PHP Requires | 7.1+ | 7.4+ | |
| Business Model | Free | Free | |
| Latest Version | 3.2.3 | 2.0.2 |
Rating Breakdown
Kit (formerly ConvertKit) – Email…
Mailster WordPress Newsletter Plugin
Download Trends
Over the past 30 days, Kit (formerly ConvertKit) – Email… averaged approximately 2,762 daily downloads while Mailster WordPress Newsletter Plugin averaged 12.
Recent Reviews
Kit (formerly ConvertKit) – Email… Reviews
Everything I need at a reasonable price.
Signed up for Kit recently and was pleasantly surprised to find everything I needed to promote and create my email list at a reasonable price. Thanks!
Very good
Excellent
I Highly Recommend Kit. Hands Down.
I have found the experience of using Kit extremely pleasurable and valuable. I highly recommend its use as it is easy to navigate and they think of everything that you’ll need to get you the results y
Mailster WordPress Newsletter Plugin Reviews
Is this plugin supported or developed
Is this plugin supported or developed .
Awful performance and support
I don’t often take the time to write a review but the “support” for this plugin is absolutely abysmal. The last FOUR WEEKS of trying to switch from legacy Mailster to new forms has been excruciating.
Total nightmare
What a nightmare of a plugin. There are virtually no instructions on how to set it up, it’s unreliable and has lots of bugs. We had an issue with it trying to send hundreds of emails without knowin
More Email Newsletter Worth Comparing
Top alternatives in the same category as Kit (formerly ConvertKit) – Email… and Mailster WordPress Newsletter Plugin
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Frequently Asked Questions
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.