WP Mail SMTP by WPForms – The Most… vs WPO365 | Mail Integration for Office… (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
WPO365 | Mail Integration for Office…
2.0K+ active installs
Free
Quick Verdict
As of April 2026, WPO365 | Mail Integration for Office… has a higher user rating (4.9/5 from 26 reviews) while WP Mail SMTP by WPForms – The Most… leads in active installations (4.0M+ vs 2.0K+). Both are free WordPress plugins. WP Mail SMTP by WPForms – The Most… has accumulated 76M+ total downloads while WPO365 | Mail Integration for Office… has 59K+.
Detailed Comparison
| Metric | WP Mail SMTP by WPForms – The Most… | WPO365 | Mail Integration for Office… | |
|---|---|---|---|
| Rating | 4.8/5 | ► | 4.9/5 |
| Total Reviews | 5,089 | ◄ | 26 |
| Active Installs | 4.0M+ | ◄ | 2.0K+ |
| Total Downloads | 76M+ | ◄ | 59K+ |
| Support Resolution | 88% | N/A | |
| Last Updated | 4 months ago | ◄ | 1 year ago |
| First Released | 2007 | 2020 | |
| Age | 19 years | 6 years | |
| WP Requires | 5.5+ | 5.5.3+ | |
| PHP Requires | 7.4+ | 7.1.1+ | |
| Business Model | Free | Free | |
| Latest Version | 4.7.1 | 1.9.2 |
Rating Breakdown
WP Mail SMTP by WPForms – The Most…
WPO365 | Mail Integration for Office…
Download Trends
Over the past 30 days, WP Mail SMTP by WPForms – The Most… averaged approximately 14,159 daily downloads while WPO365 | Mail Integration for Office… averaged 8.
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
WPO365 | Mail Integration for Office… Reviews
Awesome
Works like a charm and has a great tutorial on how to set it up. Thank you!
Super good mail plugin
I really appreciate author’s contribution. I installed this plugin and it has been working great! Now I have upgraded my WordPress to version 6.0. This plugin is still working as usual. Can’t imagine
It works and is not difficult to configure
Very nice plugin. Highly recommended. Create the app on O365. Take record of the client ID, secret, Tenant ID. Put them all into the plugin. Authorize. Then everything works fine. The plugin does not
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Frequently Asked Questions
Is WP Mail SMTP by WPForms – The Most… or WPO365 | Mail Integration for Office… more popular?
Which has better ratings — WP Mail SMTP by WPForms – The Most… or WPO365 | Mail Integration for Office…?
Are WP Mail SMTP by WPForms – The Most… and WPO365 | Mail Integration for Office… free?
Which plugin has better support — WP Mail SMTP by WPForms – The Most… or WPO365 | Mail Integration for Office…?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.