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Post SMTP Pro

by Post SMTPv1.5.5Unlimited sites

Post SMTP Pro is a WordPress plugin by Post SMTP that replaces the default mail-sending method with an authenticated SMTP connection.

Product facts

Version
1.5.5
Released
23 October 2026
Type
Plugin
Licence
GPL
Included in
Every plan, or $4.79 / year on its own

Overview

WordPress sites use the default mail-sending method unless another option is configured, and messages can run into delivery problems. Post SMTP Pro routes email through an authenticated SMTP connection instead. Site owners can use a supported email service, including Gmail, Office 365, Amazon SES, or Mailgun, to send messages from their WordPress site.

A setup wizard guides users through configuring email settings. After setup, the plugin records emails that were sent or failed, making it easier to review delivery problems. It can also send notifications when an issue occurs and try alternative SMTP servers if the primary connection fails.

Features

  • Authenticated SMTP sending: Replace WordPress’s default mail-sending method with a secure, authenticated SMTP connection for sending site email.
  • Email service options: Connect through services such as Gmail, Office 365, Amazon SES, or Mailgun to send WordPress email.
  • Guided setup wizard: Follow a step-by-step wizard to configure email settings and connect the site to an SMTP service.
  • Email activity logs: Review records of emails sent and failed to monitor site messages and investigate delivery issues.
  • Failure notifications: Receive notifications when an email delivery problem occurs, so you can check the issue.
  • Fallback SMTP routing: Set the plugin to try alternative SMTP servers when the primary connection fails.

Best for

  • WordPress sites that send email
  • Site owners troubleshooting delivery failures
  • Agencies managing WordPress email settings

Changelog

Version 1.5.5 — 15 September 2026

  • Improved Compatibility and verification with Post SMTP Core v4.0.2 and WordPress 7.1.
  • Fixed Resolved duplicate and infinite log generation during fallback mailer failures.
  • Fixed Corrected open tracking status indicators between primary and fallback mailer entries.
  • Fixed Ensured attachments are properly recorded in email logs when routed through fallback mailers.
  • Fixed Fixed UI alignment issues in the Bulk Resend popup.

Earlier versions

  • 1.5.4 (24 August 2026): 3 improved, 6 fixed
  • 1.5.3 (3 June 2026): 2 fixed
  • 1.5.2 (1 April 2026): 5 fixed

FAQ

Is Post SMTP Pro free?

The code of Post SMTP Pro is licensed under the GPL, so anyone may use, change and share it. GPL 247 is a paid service: a plan or a purchase of Post SMTP Pro 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 Pro is this?

Version 1.5.5, released 23 October 2026. New versions appear here when the developer publishes them.

How do I update Post SMTP Pro?

Install GPL 247 Updater on your site and paste your key from My Account. It installs new versions of Post SMTP Pro for you.

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