Skip to content
Just updated71 new versions in the last 24 hoursDownloads left today: of of leftNo downloads left today · Resets in h
Post SMTP Pro plugin cover image

PluginUpdated

Post SMTP Pro

by Post SMTPv1.5.5Unlimited sites

Post SMTP Pro is a WordPress plugin from Post SMTP that replaces the default mail-sending method with a secure, authenticated SMTP connection.

Product facts

Version
1.5.5
Released
23 October 2026
Type
Plugin
Licence
GPL
Included in
Every plan, or $4.19 / year on its own

Overview

WordPress sends email with a default mail function that often lacks proper authentication, so messages such as order notices, form submissions and password resets can land in spam or vanish. Post SMTP Pro replaces that method with an authenticated SMTP connection through the mail service you choose, including Gmail, Office 365, Amazon SES and Mailgun.

A setup wizard walks you through the configuration step by step, so you do not need much technical knowledge. After that, email logs show every message sent and every failure, and notifications tell you when something goes wrong. If the main connection fails, the plugin can try an alternative SMTP server. Developers can also adjust behavior through hooks and filters.

Features

  • Secure SMTP authentication: Emails go out through an authenticated SMTP connection instead of the default WordPress mail function, which helps them avoid being marked as spam.
  • Choice of mail providers: Connect Gmail, Office 365, Amazon SES, Mailgun and other services, so you can keep using the mail provider you already prefer.
  • Step-by-step setup wizard: A guided wizard takes you through the email settings in order, which makes configuration approachable for beginners and quicker for experienced users.
  • Detailed email logs: Review a record of every email sent and every email that failed, which makes it easier to find and troubleshoot delivery problems.
  • Failure notifications: Get an alert when email delivery problems occur, so you can act quickly instead of finding out later that messages never arrived.
  • Fallback email routing: If the primary SMTP connection fails, the plugin tries alternative SMTP servers so your site's emails keep going out.
  • OAuth 2.0 support: Authenticate with major email providers using OAuth 2.0, which adds protection against unauthorized access to your mail connection.
  • Customizable headers and hooks: Adjust email headers to match your branding, and use hooks and filters to fit the plugin into specific workflows.

Best for

  • WordPress sites whose emails land in spam
  • Store and form owners who need delivery records
  • Agencies setting up reliable email for client sites

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