WP Mail SMTP by WPForms – The Most… vs HollerBox — Fast & Effective Popups &… (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
HollerBox — Fast & Effective Popups &…
3.0K+ active installs
Free
Quick Verdict
As of April 2026, WP Mail SMTP by WPForms – The Most… has a higher user rating (4.8/5 from 5,089 reviews) and leads in active installations (4.0M+ vs 3.0K+). Both are free WordPress plugins. WP Mail SMTP by WPForms – The Most… has accumulated 76M+ total downloads while HollerBox — Fast & Effective Popups &… has 186K+.
Detailed Comparison
| Metric | WP Mail SMTP by WPForms – The Most… | HollerBox — Fast & Effective Popups &… | |
|---|---|---|---|
| Rating | 4.8/5 | 4.8/5 | |
| Total Reviews | 5,089 | ◄ | 32 |
| Active Installs | 4.0M+ | ◄ | 3.0K+ |
| Total Downloads | 76M+ | ◄ | 186K+ |
| Support Resolution | 88% | N/A | |
| Last Updated | 4 months ago | ◄ | 8 months ago |
| First Released | 2007 | 2017 | |
| Age | 19 years | 9 years | |
| WP Requires | 5.5+ | 5.0+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 4.7.1 | 2.3.10.1 |
Rating Breakdown
WP Mail SMTP by WPForms – The Most…
HollerBox — Fast & Effective Popups &…
Download Trends
Over the past 30 days, WP Mail SMTP by WPForms – The Most… averaged approximately 13,731 daily downloads while HollerBox — Fast & Effective Popups &… averaged 13.
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
HollerBox — Fast & Effective Popups &… Reviews
It works
Works without problem. Simple configuration.
Doesn’t work
I installed the plugin and when trying to create my first popup I got the following error: “We could not load the editor because the defined template is no longer available.” I can’t create any pop
I like it.
I was looking for something lightweight, simple, and, with an intuitive real-time interface for my client. This met the requirements. Here are some sugestions for improvement, though. Adding a
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Frequently Asked Questions
Is WP Mail SMTP by WPForms – The Most… or HollerBox — Fast & Effective Popups &… more popular?
Which has better ratings — WP Mail SMTP by WPForms – The Most… or HollerBox — Fast & Effective Popups &…?
Are WP Mail SMTP by WPForms – The Most… and HollerBox — Fast & Effective Popups &… free?
Which plugin has better support — WP Mail SMTP by WPForms – The Most… or HollerBox — Fast & Effective Popups &…?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.