by Saad Iqbal 4.7 (525 reviews)

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App

Name: Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App
Rating: 4.7 (525 reviews)
Author: Saad Iqbal

Improve WordPress email deliverability. Connect Gmail SMTP, Microsoft 365, Brevo, SendGrid, Mailgun, Zoho, Amazon SES, etc. #1 WordPress SMTP Plugin.

Post SMTP ranks #162 among WordPress.org plugins with 300,000+ active installations, is #16 of 3,349 in the Communication category, a 4.7/5 rating from 525 reviews, and was last updated Aug 25, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 7.0.4 (Current: 7.1)

v4.0.1 Current Version v4.0.1

Updated 3 weeks ago Last Update on 25 Aug, 2026

Refreshed 7 hours ago Last Refreshed on

#16 of 3,349 in Communication Top 1% by installs Downloads -52% this week Actively maintained

View on WordPress.org

Rank

#162

— No change

Active Installs

300K+

-22.7%

KW Avg Position

2.2

— No change

Downloads

20.2M

+3,298 today

Support Resolved

94%

— No change

Rating

94%

Review 4.7 out of 5

4.7 (525 reviews)

Next Milestone 400K

Total Progress 89.6%

300K+ 400K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Rank Changes

Current #162

Change

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.7

525 reviews

Overall 94%

475 (90%)

6 (1%)

3 (1%)

35 (7%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

94%

Resolution Rate

Security History

Source: WPVulnerability

36 known vulnerabilities on record · 14 in the last 24 months · checked 1 week ago

May 28, 2026

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 4.0.1

CVE-2026-81278 · Fixed in v4.0.1
Apr 30, 2026

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.6.3

CVE-2026-48838 · Fixed in v3.6.3
Apr 30, 2026

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.1.0

CVE-2024-13362 · Fixed in v3.1.0
Mar 17, 2026

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.9.0

CVE-2026-3090 · Fixed in v3.9.0
Mar 17, 2026

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.9.0

CVE-2026-2559 · Fixed in v3.9.0
Dec 9, 2025

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.6.2

CVE-2025-67563 · Fixed in v3.6.2
Dec 3, 2025

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.6.2

CVE-2025-12887 · Fixed in v3.6.2
Oct 31, 2025

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.6.1

CVE-2025-11833 · Fixed in v3.6.1
Sep 2, 2025

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.4.2

CVE-2025-9219 · Fixed in v3.4.2
Jul 21, 2025

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App [post-smtp] < 3.3.0

CVE-2025-24000 · Fixed in v3.3.0

Showing the 10 most recent of 36 records.

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Plugin Details

Version: 4.0.1
Last Updated: Aug 25, 2026
Requires WP: 5.6.0+
Tested Up To: 7.0.4
PHP Version: 7.1 or higher
Author: Saad Iqbal

Support & Rating

Rating: ★ ★ ★ ★ ★ 4.7
Reviews: 525
Support Threads: 18
Resolved: 94%

Keywords

email email logs gmail smtp office 365 smtp

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who need reliable email delivery through SMTP providers like Gmail, Microsoft 365, Brevo, and Amazon SES. It solves the problem of WordPress emails failing to send or landing in spam by replacing the default PHP mail function with authenticated SMTP connections and providing logs, alerts, and monitoring tools.

3-step SMTP setup wizard
Detailed email logs
SPF, DKIM & DMARC checks
Post SMTP mobile app
Fallback/backup SMTP mailer
OAuth 2.0 authentication
Instant failure notifications
Weekly email summary report

Frequently Asked Questions

Common questions about Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App

A modern replacement for traditional password-based authentication. Post supports the OAuth 2.0 implementations of all three major e-mail providers: Gmail, Office365, Brevo, Mailgun, Hotmail and Yahoo Mail.

Post requests a limited access OAuth 2.0 token (valet key) to access the APIs (enter the house) and perform a specific service (handle Gmail SMTP, stay out of Google Docs) with no need for you to surrender your username and password credentials (master house key). Once access is granted, Post commandeers the WordPress wp_mail() function to provide an incredibly stable mail sub-system. There are many reasons why OAuth 2.0 is better than any password-based mechanism: Post will never ask for your password, so your password can't be stolen If you change your password regularly, you will never have to update Post's configuration You have tighter control over the data Post has access to. For Google users, it can never access your Calendar or Docs or YouTube; for Yahoo users, it can never access your Flickr If your WordPress site gets hacked, you can revoke Post's email access without impacting any other application or website that has access to your account NEVER give out your Gmail, Microsoft or Yahoo password to a 3rd-party or 3rd-party program that you don't fully trust.

Yes! With the Post SMTP Plugin, you can configure any SMTP mailer account, including Brevo, Mailgun, and SendGrid on your WordPress site. Check out our detailed SMTP configuration documentation for all major SMTP service providers.

To use OAuth, your website needs its own Client ID. The Client ID is used to control authentication and authorization and is tied to the specific URL of your website. If you manage several websites, you will need a different Client ID for each one.

Go to Microsoft account Developer Center and select 'Create application'. In the 'Application name' field, enter 'Post SMTP'. Select 'I accept.' Select 'API Settings' from under 'Settings'. In 'Redirect URL', enter the redirect URI given by Post (either from the wizard or from the manual configuration page). Select Save. Select 'App Settings' from under 'Settings'. Enter the Client ID and Client Secret displayed here into the Post's settings page.

Go to Yahoo Developer Network and select 'Create an App'. In the 'Application Name' field, enter 'Post SMTP'. For 'Application Type', choose 'Web Application'. In 'Home Page URL', enter the 'Home Page URL' given by Post. In 'Callback Domain', enter the 'Callback Domain' given by Post. Under 'API Permissions', choose 'Mail.' Under 'Mail' choose 'Read/Write' Click 'Create App' Enter the Client ID and Client Secret displayed here into the Post's settings page.

If you have a Google Account from the Google Developer's Console, use the Delete button under the Client ID. If you have a Microsoft Live account, from the Microsoft account Developer Center, select the Application and choose Delete Application. If you have a Yahoo Account, from the Yahoo Developer Network My Apps, select the Application and choose Delete App.

You can report security bugs through the Patchstack Vulnerability Disclosure Program. The Patchstack team helps validate, triage, and handle any security vulnerabilities. Report a security vulnerability.