WP Updates Notifier is a free WordPress plugin designed to monitor your WordPress installation for core, plugin, and theme updates. It sends email notifications when updates become available, making it especially useful for users who do not frequently log in to their WordPress admin dashboard or manage client websites. The plugin allows users to customize the frequency of update checks, with options for hourly, twice daily, or daily intervals, ensuring timely awareness of necessary updates.

In addition to standard notifications, WP Updates Notifier offers advanced features such as the ability to choose notifications for active themes and plugins only, removal of upgrade nag messages for non-admin users, and customizable email subjects and content through filters. This plugin has been rewritten for improved performance and includes support for multiple email addresses, making it a robust tool for WordPress site management.