Plugin
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Post SMTP (Free Activated)
Post SMTP (Free Activated) is a WordPress plugin by Post SMTP that routes site email through an authenticated SMTP connection instead of the default PHP mail function.
Product facts
- Version
- 4.0.2
- Released
- 23 October 2026
- Type
- Plugin
- Licence
- GPL
- Included in
- Every plan
Overview
WordPress sites often rely on the default PHP mail function to send messages. Post SMTP replaces that method with an authenticated SMTP connection, giving site administrators a way to configure email through services such as Gmail, Microsoft 365, and Amazon SES. A guided setup wizard walks through the configuration, making the plugin relevant for site owners who want to manage email sending from WordPress.
The plugin includes email logs and error tracking to help administrators review sent messages and identify sending problems. It also supports backup SMTP servers, so an alternate server can be used if the primary service has an issue. Post SMTP can fit sites that send notifications or form submissions and need tools to monitor their outgoing email.
Features
- Authenticated SMTP: Replace WordPress's default PHP mail function with an authenticated SMTP connection for sending site email.
- Provider support: Connect through supported email services, including Gmail, Microsoft 365, Amazon SES, and SendGrid.
- Guided configuration: Use the setup wizard to work through connecting an SMTP account and configuring the plugin.
- Email logs: Review logs of sent emails to monitor messages and investigate email delivery issues.
- Error tracking: View error reports to identify problems that occur when WordPress attempts to send email.
- Backup SMTP servers: Configure alternate SMTP servers to use if the primary sending service has an issue.
- OAuth 2.0 authentication: Use OAuth 2.0 authentication with supported providers, including Gmail.
- Custom email headers: Customize email headers to suit branding or technical requirements for messages sent by your site.
Best for
- WordPress sites sending email notifications
- Sites delivering form submissions by email
- Administrators monitoring outgoing WordPress email
Changelog
Version 4.0.2 — 24 September 2026
- Security Resolved Stored DOM-Based Cross-Site Scripting (XSS) vulnerability in failed email logs on WordPress Multisite.
- Fixed Resolved fatal error during All-In-One Security (AIOS) unlock email requests.
- Fixed Prevented redundant wp_posts database queries on AJAX requests to improve performance.
- Fixed Resolved infinite and duplicate email log generation during mailer and fallback failures.
- Fixed Corrected email tracking status assignment between primary and fallback mailer logs.
- Fixed Fixed issue where attachments were missing from fallback mailer logs.
- Fixed Prevented duplicate failed email log entries from being created on email failures.
- Fixed Fixed button alignment and cut-off issues in the Bulk Resend popup modal.
- Fixed Fixed numeric metric alignment and spacing in the Email Reporting section.
Earlier versions
- 4.0.1 (25 August 2026): 1 fixed
- 3.9.5 (24 June 2026): 1 improved
- 3.9.1 (1 April 2026): 1 improved, 5 fixed
FAQ
Is Post SMTP (Free Activated) free?
The code of Post SMTP (Free Activated) is licensed under the GPL, so anyone may use, change and share it. GPL 247 is a paid service: a plan gives you the download and its updates. The developer's own support, licence key and online services are not included.
Which version of Post SMTP (Free Activated) is this?
Version 4.0.2, released 23 October 2026. New versions appear here when the developer publishes them.
How do I update Post SMTP (Free Activated)?
Install GPL 247 Updater on your site and paste your key from My Account. It installs new versions of Post SMTP (Free Activated) for you.
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