Email Deliverability – SMTP Replacement, Email API Deliverability & Email Log

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin · 72% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A declining trend compresses what a buyer would pay.

1. ★★★★★ damntastymuffin

   2mo ago

   This plugin basically breaks the functionality of the Elementor contact forms on your website. The Site Mailer plugin creates an email that overrides all emails sent from your website. So for example, when you set up your contact form to send a message to you, and you hit reply to that message (hoping that it will reply to the person who was filling out the contact form), you will also be replying to your website. This means that when you hit send you receive an ugly message saying that the sending failed (when it only failed sending the message to your own website). I have had multiple clients writing to me asking why their emails were failing when replying to people from their contact form. I even asked if there was some fix to this, and the support people couldn’t understand my problem (they kept saying I was entering the email incorrectly when sending a message in my email application!!!?! Like how far from my issue could you be? I’m on Elementor!?). *Update* I have had a back and forth email exchange with the Elementor support team about this issue for days now, and the conclusion was that they don’t plan to fix this any time soon, so I won’t be using this anymore, and am considering ending my Elementor subscription entirely.

   Read on wp.org ↗
2. ★★★★★ Cedar Design

   2mo ago

   Great no fuss install and instantly get mails from your contact form 7 with no smtp server setup – I Love it!

   Read on wp.org ↗
3. ★★★★★ petralearnsword

   5mo ago

   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 try reconnecting your account to continue using Site Mailer. I’ve done all of the above and nothing works. This is soooo annoying.

   Read on wp.org ↗
4. ★★★★★ Chris

   6mo ago

   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 form plugins like JetFormBuilder, the Reply-To address should be managed within the form itself (for example, replying directly to the email address entered by the visitor). Because Site Mailer always adds its own Reply-To header, it interferes with this behavior and results in replies being sent to multiple addresses. It would greatly improve the plugin if the Reply-To field could be left empty or disabled, so form plugins can fully control the email headers. At the moment this limitation makes Site Mailer difficult to use in combination with more advanced form setups.

   Read on wp.org ↗
5. ★★★★★ Svensonsan

   12mo ago

   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 be auto-installed without explicit consent. It clutters the site admin with features I didn’t ask for and don’t need. It raises serious trust and security concerns when software appears on production websites without my approval. If Elementor or this plugin’s developers want users to try it, they should offer it as an optional install, not force it onto sites. This kind of behavior erodes trust and makes me question the integrity of the platform. I immediately uninstalled it.

   Read on wp.org ↗
6. ★★★★★ Suyta

   12mo ago

   I don’t understand negative reviews. Site Mailer is fantastic. It really solve email delivery issues. The free plan is enough almost always and premium plan is not expensive. Thank you so much!

   Read on wp.org ↗
7. ★★★★★ pzanto

   1.0y ago

   Funny how elementor now advertises new plugins (this against spam) by spamming elementor pro users in their work environment with a “free” but not free plugin

   Read on wp.org ↗
8. ★★★★★ nasirujjaman

   1.1y ago

   Only 200 mail free then huge charge. Why did you write free?

   Read on wp.org ↗

Recent releases and news for this plugin

1. 2026-07-16 Version 1.4.7 Tweak: Harden security for suppressions screen. 1.4.7
2. 2026-07-01 Version 1.4.6 Tweak: accessibility fix in deactivation modal. Tweak: Assets renaming. 1.4.6
3. 2026-06-02 Version 1.4.5 Tweak – Improved support for site URL different than home URL Tweak – Improved Elementor One support 1.4.5
4. 2026-03-31 Version 1.4.4 Tweak: Improved WPML support Tweak: Implement internalization (i18n) best practice 1.4.4
5. 2026-02-17 Version 1.4.3 Tweak: Enabled display of WordPress admin notices for better visibility Fix: Resolved an issue where logs failed to update in specific Email Deliverability cases 1.4.3
6. 2026-01-28 Version 1.4.2 Tweak: Security enhancements for access control 1.4.2

1 disclosed vulnerability on record for this plugin, fixed in the current version. Sites on older versions stay exposed until they update.

1. High · 7.2 Site Mailer <= 1.2.3 - Unauthenticated Stored Cross-Site Scripting ↗
   2025-02-27 CVE-2025-1319 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects <= 1.2.3 Patched in 1.2.4

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0

Translated into 12 languages, 2 at 90% or more

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2025-11-18 100K+ → 200K+ up after 269 days in tier
2. 2025-02-22 90K+ → 100K+ up after 11 days in tier
3. 2025-02-11 80K+ → 90K+ up after 12 days in tier
4. 2025-01-30 70K+ → 80K+ up after 11 days in tier
5. 2025-01-19 60K+ → 70K+ up after 12 days in tier
6. 2025-01-07 50K+ → 60K+ up after 14 days in tier
7. 2024-12-24 40K+ → 50K+ up after 12 days in tier
8. 2024-12-12 30K+ → 40K+ up after 12 days in tier

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• WP Mail Logging 300K+ installs · 4.7★ · 3 shared tags A
• Check & Log Email – Easy Email Testing & Mail logging 100K+ installs · 4.8★ · 3 shared tags A
• Solid Mail – SMTP email and logging made by SolidWP 60K+ installs · 4.2★ · 3 shared tags A
• Simple SMTP 2K+ installs · 4.4★ · 3 shared tags B
• S Send From 500+ installs · 4.3★ · 3 shared tags B
• WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin 4M+ installs · 4.8★ · 2 shared tags A

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Drop a live Pulse card for Email Deliverability – SMTP Replacement, Email API Deliverability & Email Log into a readme, a review or a deck. It updates itself.

Email Deliverability – SMTP Replacement, Email API Deliverability & Email Log: 200K+ active installs, 2.3★ (16 reviews). Plugin Pulse (WP Mayor), as of 2026-08-25. https://plugins.wpmayor.com/plugin/site-mailer