Post SMTP v3.9.1 – Best SMTP Plugin for WordPress Email Delivery

Last Update: May 5, 2026
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Overview

Email not reliable? Post SMTP is the first and only WordPress SMTP plugin to implement OAuth 2.0 for Gmail, Hotmail and Yahoo Mail. Setup is a breeze with the Configuration Wizard and integrated Port Tester. Enjoy worry-free delivery even if your password changes!

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Status

  Plugin has been activated, access premium features.

Changelog

v3.9.1 - Apr 1, 2026

* TWEAK – Updated Emailit API to v2.
* FIX – Added Header support in Maileroo.
* FIX – Resolved qrstr class conflict.
* FIX – Emailit API status handling (status code 201 was incorrectly marked as failed instead of pending/successful).
* FIX – Resolved fatal error: Class “HTMLPurifier_Config” not found.
* FIX – Fixed SMTP2GO false positive response.

Installation

  • Documentation: https://postmansmtp.com/docs/
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