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MainWP Post SMTP Extension – Easily Manage WP SMTP Setup for All Sites in One Place icon
Maintained Tested up to 6.9.10 #1 in main wp

MainWP Post SMTP Extension – Easily Manage WP SMTP Setup for All Sites in One Place

Want to simplify your WordPress email management across all your sites? If your answer is yes, then you need ✨ MainWP Post SMTP Extension! ✨

Active installs300+100+ tier
Downloads · 30d190▲ +35.7% vs prev. 30d
Rating5/51 reviews
Health score52/100Fair
All-time downloads6.8KSince Dec 2023
Support resolved1 / 1100% in last 2 months
RequiresWP 4.7PHP 7.0+
Downloads · 7d45▲ +28.6% week over week
Our verdict

Use with caution

MainWP Post SMTP Extension works, but test it on a staging site before relying on it in 2026. It runs on 300+ sites, is rated 5/5 and was last updated 7 months ago, and scores 52/100 on our health check.

  • Small user base (300+ active installs)
  • Very few reviews so far
  • Only tested up to WordPress 6.9 (latest is 7.1)

Daily downloads

3711Jul 9Aug 22Oct 6
Yesterday5
Daily average (1y)7
Peak day425Feb 20, 2026
Last 12 months2.6K

Download spikes usually follow a new release — each site that auto-updates counts as a download.

Rankings

Where MainWP Post SMTP Extension stands today

WordPress.org search rankings

Live position in the plugin search, top 100
KeywordPositionCompeting pluginsCategory
main wp #77 6,701 Best main wp plugins →
MainWP #12 68 Best MainWP plugins →
MainWP Child #9 35 Best MainWP Child plugins →
smtp #30 1,420 Best smtp plugins →
wp-mail >100 3,577 Best wp-mail plugins →

Version adoption

Share of active sites per release.

  • 1.0100.0%

Rating breakdown

★★★★★★★★★★ 5 from 1 reviews

  • 5★100.0%
  • 4★0.00%
  • 3★0.00%
  • 2★0.00%
  • 1★0.00%

About MainWP Post SMTP Extension

From the official readme · v1.0.6

Description

Want to simplify your WordPress email management across all your sites? If your answer is yes, then you need ✨ MainWP Post SMTP Extension! ✨

MainWP Post SMTP Extension is a powerful and easy-to-use add-on that allows you to set up and control the SMTP configuration for all your sites from your MainWP dashboard.

Whether you want to use an API key or SMTP credentials, you can configure SMTP once on your main site and apply them to all your child sites with a single click.

No more hassle of setting up each site individually! 😀

Additionally, you can monitor the email delivery status, troubleshoot any issues, and get notified of any email failures for all your sites in one place. 🎉

With MainWP Post SMTP Extension, you can save time, avoid errors, and improve your email deliverability.

5 Reasons Why You Should Install MainWP Post SMTP Extension

✅ Reason #1:
1-Click SMTP Configuration Across All Sites

No need to configure your SMTP settings for each site individually. 🤯

With MainWP Post SMTP Extension, just set up your SMTP server on your main site and sync it with all your child sites with a single click.

🎉 This way, you can save the time and hassle of setting up SMTP for each site individually.

✅ Reason #2:
Reliable Email Delivery with Backup SMTP Connection

In any case, if your primary SMTP service provider fails to deliver your emails, MainWP Post SMTP Extension automatically switches to a secondary SMTP service provider to ensure your emails always reach your recipients.

🎉 Consequently, it increases your site’s email delivery rate and makes email communication much more efficient.

✅ Reason #3:
Instant Email Failure Alerts – The Way You Like!

You can set up email delivery failure alerts during the Post SMTP configuration of your main site to get instant notifications whenever an email delivery fails on any of your sites.

There are four options to get email failure alerts:

✔️ Admin (Email): You’ll receive an email alert to your admin account
✔️ Pushover: Receive a push notification on your mobile device
✔️ Slack: Direct message (DM) via Slack or Slack channel alert
✔️ Twilio (SMS): Receive an SMS on your phone

🎉 BONUS: FREE Chrome Extension to get email failure notifications right in your Chrome browser.

✅ Reason #4:
Dedicated Post SMTP Mobile App – 100% FREE 🤯

🎉 Keep Track of Your WordPress Emails, Anywhere Anytime…!!!
Post SMTP Mobile App empowers you to:

✔️ Easily check the status of your WordPress emails
✔️ Get instant notification on every email failure
✔️ Resend any failed email again with a single click
✔️ View the content of your email in detail
✔️ Connect multiple WordPress sites to receive failure alerts.
✔️ Diagnose email failure with a detailed error message

🎉 On top of that, you can easily Contact Post SMTP support directly from the app.

✅ Reason #5:
Detailed Email Logs of All Your Sites in One Place

🎉 Access a comprehensive and searchable log viewer in the MainWP dashboard to check email delivery status, view email content, error details, and much more for all your sites.

Within the log screen, you can:

✔️ Filter the email logs by date and subject for a quick search
✔️ Easily sort emails by Status, Subject, Sent To, Status, or Delivery Time
✔️ View email attachments and resend them with a single click.

So, what’s holding you back❓ 🤷

Make A Smart Choice 😎 by downloading the MainWP Post SMTP Extension TODAY to manage your WordPress Emails with EASE!!! 😃

Prerequisites to Install MainWP Post SMTP Extension

✔️ MainWP Dashboard and Post SMTP plugins installed on your main (parent) site
✔️ MainWP Child and Post SMTP plugins installed on all your child sites
✔️ MainWP Dashboard Version 4.5.3.2 or higher
✔️ MainWP Child Version 4.5.3 or higher
✔️ WordPress version 6.4.2 or higher

How to Install MainWP Post SMTP Extension

Once you’ve installed the MainWP Dashboard, MainWP Child, and Post SMTP plugins on the parent and all the child sites, respectively, then simply download and install the MainWP Post SMTP Extension on the main (parent) site.

After that, follow our step-by-step documentation of the MainWP Post SMTP Extension to set up and manage SMTP settings across all your sites.

Need Help? Get On-Demand SMTP Configuration Support

Can’t figure out how to configure MainWP Post SMTP Extension? Don’t worry; We’ve got you covered!

Our team of WordPress experts is always ready to help you with any email delivery issues or WordPress SMTP configuration. All you need to do is click here, fill out the form, and relax while we take care of everything for you.

Our SMTP Configuration Support is your one-stop solution for all your WordPress email delivery problems.

Changelog

1.0.6 – Mar 18, 2026

  • TWEAK – Sync button in the header to synchronize all settings from the parent to child sites directly from the MainWP dashboard.
  • TWEAK – Added compatibility for email failure alerts.
  • FIX – Resolved an issue with email log synchronization from child sites to the parent site.

1.0.5 – Feb 19, 2026

  • Reverted the last update.

1.0.4 – Feb 19, 2026

  • TWEAK – Sync button in the header to synchronize all settings from the parent to child sites directly from the MainWP dashboard.
  • TWEAK – Added compatibility for email failure alerts.
  • FIX – Resolved an issue with email log synchronization from child sites to the parent site.

1.0.3 Feb 14, 2024

  • FIX – Pro conflict with free Add-ons.

1.0.2 Feb 07, 2024

  • Added support for Pro Add-ons.

1.0.1 Jan 01, 2024

  • FIX – Sites’ logs switching drop down was not rendering properly.

Full changelog on WordPress.org →

Screenshots

Access the MainWP Post SMTP Extension from your parent site's MainWP dashboard.
Access the MainWP Post SMTP Extension from your parent site's MainWP dashboard.
Enable quick SMTP configuration on all or selected child sites using MainWP dashboard.
Enable quick SMTP configuration on all or selected child sites using MainWP dashboard.
Set Email Address, Name, and Reply-To for your child sites directly from the MainWP dashboard if needed.
Set Email Address, Name, and Reply-To for your child sites directly from the MainWP…
View first child site's Post SMTP dashboard showing that Post SMTP is being used from the MainWP dashboard.
View first child site's Post SMTP dashboard showing that Post SMTP is being used from the…
View second child site's Post SMTP dashboard showing that Post SMTP is being used from the MainWP dashboard.
View second child site's Post SMTP dashboard showing that Post SMTP is being used from…

For developers

Is this your plugin? Show off the numbers.

Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.

Active installs badge Rating badge Health score badge

FAQ

MainWP Post SMTP Extension: quick answers

Straight answers, pulled from live WordPress.org data.

Live data from WordPress.org · checked Oct 7, 2026

Is MainWP Post SMTP Extension free?

Yes. MainWP Post SMTP Extension is free to download and use from the official WordPress.org plugin directory.

Is MainWP Post SMTP Extension safe to use in 2026?

MainWP Post SMTP Extension works, but test it on a staging site before relying on it in 2026. It runs on 300+ sites, is rated 5/5 and was last updated 7 months ago, and scores 52/100 on our health check.

How many websites use MainWP Post SMTP Extension?

MainWP Post SMTP Extension is active on 300+ WordPress websites and has been downloaded 6,779 times since it launched in December 2023. It was downloaded 190 times in the last 30 days.

Does MainWP Post SMTP Extension work with WordPress 7.1?

MainWP Post SMTP Extension is officially tested up to WordPress 6.9.10, while the latest release is 7.1.3. It may still work, but try it on a staging site first.

What PHP version does MainWP Post SMTP Extension need?

MainWP Post SMTP Extension requires PHP 7.0 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.

When was MainWP Post SMTP Extension last updated?

The latest version, 1.0.6, was released on March 18, 2026 (7 months ago).

Who makes MainWP Post SMTP Extension?

MainWP Post SMTP Extension is developed and maintained by Saad Iqbal.

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