WP Mail SMTP by WPForms – The Most… vs WP INBOX (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
WP INBOX

WP INBOX

3.5(2)

20 active installs

Free

Updated 5 years ago
View WP INBOX

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 20). Both are free WordPress plugins. WP Mail SMTP by WPForms – The Most… has accumulated 76M+ total downloads while WP INBOX has 3.2K+.

Detailed Comparison

Rating
4.8/5WP Mail SMTP by WPForms – The Most…
WP INBOX3.5/5
Total Reviews
5,089WP Mail SMTP by WPForms – The Most…
WP INBOX2
Active Installs
4.0M+WP Mail SMTP by WPForms – The Most…
WP INBOX20
Total Downloads
76M+WP Mail SMTP by WPForms – The Most…
WP INBOX3.2K+
Support Resolution
88%WP Mail SMTP by WPForms – The Most…
WP INBOXN/A
Last Updated
4 months agoWP Mail SMTP by WPForms – The Most…
WP INBOX5 years ago
First Released
2007WP Mail SMTP by WPForms – The Most…
WP INBOX2020
Age
19 yearsWP Mail SMTP by WPForms – The Most…
WP INBOX6 years
WP Requires
5.5+WP Mail SMTP by WPForms – The Most…
WP INBOX5.0+
PHP Requires
7.4+WP Mail SMTP by WPForms – The Most…
WP INBOX5.3+
Business Model
FreeWP Mail SMTP by WPForms – The Most…
WP INBOXFree
Latest Version
4.7.1WP Mail SMTP by WPForms – The Most…
WP INBOX1.0

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%

WP INBOX

3.5/5(2 reviews)
5
50%
4
0%
3
0%
2
50%
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

WP INBOX Reviews

No reviews yet

Frequently Asked Questions

Is WP Mail SMTP by WPForms – The Most… or WP INBOX more popular?
WP Mail SMTP by WPForms – The Most… has 4.0M+ active installations while WP INBOX has 20. 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 WP INBOX?
WP Mail SMTP by WPForms – The Most… has a 4.8/5 rating from 5,089 reviews, while WP INBOX has a 3.5/5 rating from 2 reviews.
Are WP Mail SMTP by WPForms – The Most… and WP INBOX free?
WP Mail SMTP by WPForms – The Most… is free and WP INBOX 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 WP INBOX?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
WP Mail SMTP by WPForms – The Most… was last updated 4 months ago and WP INBOX was last updated 5 years ago.

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