Post SMTP Pro v4.0.1 + Pro v1.5.4

Post SMTP Pro v4.0.1 + Pro v1.5.4
= 1.5.4 - Aug 24, 2026 =
* Improvement - Added compatibility with WordPress 7.1.
* Improvement - Updated translation strings for the latest version.
* Improvement - Enhanced Google One Click middleware for failed notification emails.
* Fix - Resolved a fatal error in the Microsoft 365 extension related to token caching (`WP_Error` handling).
* Fix - Fixed newsletter email rendering issues when sent through the Microsoft 365 API.
* Fix - Resolved an issue where OAuth callbacks were hijacked during Office 365 Authentication.
* Fix - Fixed email sending compatibility issues with FluentCRMpro.
* Fix - Resolved an issue where email logs were missing for certain periods.
* Fix - Fixed Google Auth interception for RexTheme Product Feed Manager.

Post SMTP Pro Free v3.9.5 + Pro v1.5.3
No changelogs found!

Post SMTP Pro v1.5.2
== Changelog ==

= 1.5.1 – Mar 12, 2026 =
* FIX – Post SMTP <= 3.8.0 – Missing authorization for Authenticated (Subscriber+) Office 365 OAuth configuration overwrite.
* FIX – Resolved REST error: {"code":"rest_cookie_invalid_nonce","message":"Cookie check failed","data":{"status":403}}.

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Post SMTP Pro Free v3.9.0 + Pro v1.5.1

• TWEAK – Updated the Setup Wizard UI for Mailers and improved related content.
• FIX – Resolved REST error: rest_cookie_invalid_nonce (Cookie check failed – 403).
• FIX – Added support for the pre_wp_mail function for custom implementations via functions.php.
• FIX – Corrected an issue where submitted notification URLs were passed through esc_url, which escaped HTML entities (such as &) intended only for display.
• FIX – Resolved an issue where the Post SMTP email logger did not display all recipients.
• FIX – Fixed missing line breaks in the mail log content.
• FIX – Resolved the Initial Setup Wizard issue that allowed incorrect email acceptance on the wizard screen.
• FIX – Addressed missing authorization for Authenticated (Subscriber+) Office 365 OAuth configuration overwrite.

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Post SMTP Pro v1.4.5
= 1.4.5 - Nov 25, 2025 =
* IMPROVEMENT - Added PHP 8+ compatibility.
* FIX - Added authorization checks related to OAuth token updates for authenticated users.