WPSani

Quick debug.log Viewer lets you quickly inspect your site’s debug.log file without leaving the WordPress dashboard. Now with a floating action button (FAB) and modal for frontend viewing, searching, and filtering! 
The FAB is now draggable and its position is remembered — with a right-click option to reset.
<ul>
<li>Instantly view, scroll, search, and filter your <code>debug.log</code> contents </li>
<li>🔍 Search and browse logs even from the frontend with a floating action button (FAB) and modal </li>
<li>Filter logs by type: Fatal, Warning, Notice — or show all </li>
<li>Clear the log with a single click (now via AJAX) </li>
<li>Download the log for backups or support </li>
<li>Load large logs in chunks with the Load More button </li>
<li>Secure HTML output with escaping to prevent session theft </li>
<li>Stack traces are shown in single blocks for better readability </li>
<li>Works even if <code>WP_DEBUG</code> is off — as long as the file exists </li>
</ul>
Ideal for developers, site managers, and anyone needing to troubleshoot WordPress issues fast.
👉 Learn more and download from: <a href="https://wpsani.store/downloads/quick-debug-log-viewer-free/" rel="nofollow ugc">https://wpsani.store/downloads/quick-debug-log-viewer-free/</a>

Quick debug.log Viewer

Easily view and manage your WordPress debug.log file directly from the admin area — no FTP access required.

Timothy Jacobs

WP Mail Debugger captures and displays all emails sent through wp_mail() for debugging and troubleshooting. A new admin menu, WP Mail Debugger, is added under the Tools menu.
Get the <a href="https://apps.apple.com/us/app/wp-mail-debugger/id1547093438?mt=12" rel="nofollow ugc">Mac App</a> to connect to multiple WordPress websites from one convenient location.

WP Mail Debugger

I "found" this plugin when its creator presented it at WCPhx 2020. Its extremely easy to use, and is helpful in a day and age when SPFF and DKIM issues make debugging mail tough. Show your users the mail is going out. Or as a plugin developer, use it to review output.

This is so good

WP Mail Debugger captures and displays all emails sent through wp_mail() for debugging and troubleshooting.

Quick debug.log Viewer vs WP Mail Debugger