Ninja Test Email is a comprehensive email testing solution for WordPress that helps you verify your site’s email configuration is working correctly. Whether you’re troubleshooting SMTP issues, testing email deliverability, or monitoring outgoing emails, this plugin provides all the tools you need.

Why Ninja Test Email?

WordPress relies heavily on email functionality for user notifications, password resets, contact forms, and more. If emails aren’t sending properly, your site’s core functionality breaks down. Ninja Test Email gives you instant visibility into your email system with detailed logs, success/failure tracking, and comprehensive statistics.

Who Is This For?

WordPress administrators troubleshooting email issues
Developers testing email functionality during development
Site owners monitoring email deliverability
Agencies managing multiple WordPress installations
Anyone who needs to verify SMTP configuration

How It Works

Ninja Test Email integrates seamlessly into WordPress, logging all outgoing emails automatically while providing a dedicated interface for sending test emails. The plugin uses WordPress’s native wp_mail() function, ensuring compatibility with any SMTP plugin you’re already using (WP Mail SMTP, Easy WP SMTP, Post SMTP, etc.).

Technical Features

Modern React Interface: Built with React 18 and Tailwind CSS for a responsive, fast admin experience
REST API: Full REST API support for programmatic access to email testing and logs
Custom Database Table: Efficient email log storage with optimized queries
Automated Cleanup: Scheduled daily cron job to remove old logs based on retention settings
Translation Ready: Full internationalization support with 41 translatable strings
Shortcode Support: Frontend email testing via [ninja-test-email] shortcode
Search & Filtering: Powerful search across recipient, subject, and email body
Statistics Dashboard: Visual graphs showing success rates, daily volume, and trends

Features

Email Testing
* Send plain text test emails
* Send HTML test emails with custom formatting
* Validate email addresses before sending
* Customizable subject and message content
* Default templates for quick testing

Email Logging
* Automatic logging of all WordPress emails
* Capture recipient, subject, and message body
* Track success/failure status
* Record timestamps for each email
* Store email content for debugging

Dashboard & Statistics
* Visual success rate graphs
* Total emails sent counter
* Today’s email count
* Weekly email statistics
* Monthly email volume
* Status breakdown (sent vs. failed)

Log Management
* Search across all email fields
* Filter by date, recipient, or status
* Sort by time, recipient, subject, or status
* Paginated results for large datasets
* Individual log deletion
* Bulk log cleanup

Settings & Configuration
* Configurable log retention period
* Automatic cleanup scheduling
* Daily, weekly, or monthly retention options
* REST API health check endpoint
* Cron status monitoring

Developer Features
* REST API endpoints for all functions
* Frontend shortcode [ninja-test-email]
* Custom action hooks
* Namespaced code (NinjaTestEmail)
* Composer autoloading support
* WordPress Coding Standards compliant

Performance & Security
* Optimized database queries with caching
* Prepared SQL statements for security
* Capability checks (manage_options required)
* Nonce verification on all actions
* Input sanitization and output escaping
* ABSPATH security checks