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FluentSMTP – WP SMTP Plugin with Amazon… vs Site Mailer – SMTP Replacement, Email… (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

FluentSMTP – WP SMTP Plugin with Amazon…

FluentSMTP – WP SMTP Plugin with Amazon…

4.8(365)

500K+ active installs

Free

Updated 3 months ago
View FluentSMTP – WP SMTP Plugin with Amazon…
VS
Site Mailer – SMTP Replacement, Email…

Site Mailer – SMTP Replacement, Email…

2.2(14)

200K+ active installs

Free

Updated 1 month ago
View Site Mailer – SMTP Replacement, Email…

Quick Verdict

As of April 2026, FluentSMTP – WP SMTP Plugin with Amazon… has a higher user rating (4.8/5 from 365 reviews) and leads in active installations (500K+ vs 200K+). Both are free WordPress plugins. FluentSMTP – WP SMTP Plugin with Amazon… has accumulated 4.0M+ total downloads while Site Mailer – SMTP Replacement, Email… has 1.8M+. Site Mailer – SMTP Replacement, Email… has a higher support resolution rate (100% vs 32%).

Detailed Comparison

Rating
4.8/5FluentSMTP – WP SMTP Plugin with Amazon…
◄
Site Mailer – SMTP Replacement, Email…2.2/5
Total Reviews
365FluentSMTP – WP SMTP Plugin with Amazon…
◄
Site Mailer – SMTP Replacement, Email…14
Active Installs
500K+FluentSMTP – WP SMTP Plugin with Amazon…
◄
Site Mailer – SMTP Replacement, Email…200K+
Total Downloads
4.0M+FluentSMTP – WP SMTP Plugin with Amazon…
◄
Site Mailer – SMTP Replacement, Email…1.8M+
Support Resolution
32%FluentSMTP – WP SMTP Plugin with Amazon…
►
Site Mailer – SMTP Replacement, Email…100%
Last Updated
3 months agoFluentSMTP – WP SMTP Plugin with Amazon…
►
Site Mailer – SMTP Replacement, Email…1 month ago
First Released
2021FluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…2024
Age
5 yearsFluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…2 years
WP Requires
5.5+FluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…6.6+
PHP Requires
7.4+FluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…7.4+
Business Model
FreeFluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…Free
Latest Version
2.2.95FluentSMTP – WP SMTP Plugin with Amazon…
Site Mailer – SMTP Replacement, Email…1.4.3

Rating Breakdown

FluentSMTP – WP SMTP Plugin with Amazon…

4.8/5(365 reviews)
5
92%
4
2%
3
1%
2
1%
1
3%

Site Mailer – SMTP Replacement, Email…

2.2/5(14 reviews)
5
29%
4
0%
3
0%
2
7%
1
64%

Recent Reviews

FluentSMTP – WP SMTP Plugin with Amazon… Reviews

by lynnefed

Unreliable

This doesn’t work. It doesn’t send or receive any emails. I don’t understand why it gets 5 star reviews. It’s useless and unreliable.

by wonder32

Very nice effort!

This plugin is good, as things should be good!

by norton

Great Plugin

This plugin connects WordPress with Enterprise Mailing and it does it like a charm. The setup takes a few steps, but these steps are straight forward and well documented. Considering that this is a fr

Site Mailer – SMTP Replacement, Email… Reviews

by petralearnsword

Site Mailer Glitch

I’ve been using Site Mailer for a while now. But I installed it for a new client and the plugin is not working. “Sorry there was a glitch. Try refreshing the page. if that does not resolve the issue t

by Chris

it forces you to set a Reply-To address

I’m unfortunately not satisfied with Site Mailer because it forces you to set a Reply-To address in the plugin settings. There is no option to leave this field empty. For websites that use advanced

by Svensonsan

Installed without my consent

This plugin suddenly appeared on my site without me ever installing it. I can only assume it was pushed through an Elementor update, which is completely unacceptable behavior. Plugins should never

Frequently Asked Questions

Is FluentSMTP – WP SMTP Plugin with Amazon… or Site Mailer – SMTP Replacement, Email… more popular?
FluentSMTP – WP SMTP Plugin with Amazon… has 500K+ active installations while Site Mailer – SMTP Replacement, Email… has 200K+. FluentSMTP – WP SMTP Plugin with Amazon… is the more widely-used plugin as of April 2026.
Which has better ratings — FluentSMTP – WP SMTP Plugin with Amazon… or Site Mailer – SMTP Replacement, Email…?
FluentSMTP – WP SMTP Plugin with Amazon… has a 4.8/5 rating from 365 reviews, while Site Mailer – SMTP Replacement, Email… has a 2.2/5 rating from 14 reviews.
Are FluentSMTP – WP SMTP Plugin with Amazon… and Site Mailer – SMTP Replacement, Email… free?
FluentSMTP – WP SMTP Plugin with Amazon… is free and Site Mailer – SMTP Replacement, Email… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — FluentSMTP – WP SMTP Plugin with Amazon… or Site Mailer – SMTP Replacement, Email…?
As of April 2026, FluentSMTP – WP SMTP Plugin with Amazon… has a 32% support resolution rate while Site Mailer – SMTP Replacement, Email… has a 100% rate.
Which plugin is updated more frequently?
FluentSMTP – WP SMTP Plugin with Amazon… was last updated 3 months ago and Site Mailer – SMTP Replacement, Email… was last updated 1 month ago.

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