You can easily get notified for the YouTube videos which you have embedded in your WordPress site but they are deleted from the YouTube by the account admin or by the company. Youtube Not Found is new WordPress plugin that will send an email to you if it founds any videos whose code is still embedded in your blog content but the video is out from YouTube.
The plugin is easy to use. Simply install and activate Youtube Not Found, upon activation the plugin will send emails to site admin for not found YouTube videos embedded in your blog content. Developers rae still working on the plugin and there are many more new features to be launched in future updates, know more about them on its WP page.