If you want to be notified when a post or page is updated on your WordPress site, you can use either a plugin or a WordPress feature.
Plugin notifications:
There are a number of plugins that will send you notifications when posts or pages are updated on your WordPress site. The most popular plugin for this purpose is the WordPress Notifications plugin, which has more than 5 million active users.
To install the plugin, go to the WordPress Admin Area and click on the Plugins menu item. Then, click on the Add New Plugin button and enter the plugin URL into the Search Plugin box.
Click on the Install Now button to download and install the plugin.
Once the plugin is installed, you will see a new notification icon on the Posts and Pages pages in the WordPress Admin Area. To receive notifications for a particular post or page, click on the notification icon and then click on the Settings button.
In the Settings screen, you will see the option to Enable Notifications for this Post or Page. To receive notifications for all posts and pages on your site, click on the All Posts and Pages checkbox.
To receive notifications for posts only, click on the Posts Only checkbox. To receive notifications for pages only, click on the Pages Only checkbox.
To receive notifications for posts and pages, but not for comments, click on the Comments Only checkbox.
To receive notifications for posts, pages, and comments, but not for trackbacks, click on the Trackbacks Only checkbox.
To receive notifications for posts, pages, comments, trackbacks, and votes, click on the All checkbox.
To disable notifications for a particular post or page, click on the Disable checkbox.
WordPress feature notifications:
WordPress also provides a notification feature that you can use to get updates on posts and pages on your site. To use this feature, go to the Posts and Pages screen in the WordPress Admin Area and click on the Notifications button.
In the Notifications screen, you will see a list of all the posts and pages on your site. To receive notification for a particular post or page, click on the checkbox next to the post or page.
However, it is important to note that there are security risks associated with notifications. If you enable notifications, be sure that you understand how they work and that you trust the source of the notifications.
To disable notification for a particular post or page, click on the Disable checkbox.
To receive notifications for all posts and pages on your site, click on the All Posts and Pages checkbox.
To receive notification only for posts that have been commented on, click on the Comment Only checkbox.
To receive notification only for posts that have been voted on, click on the Vote Only checkbox.
To receive notification only for posts that have been liked, click on the Like checkbox.
To receive notification only for posts that have been shared, click on the Share checkbox.
To receive notification only for posts that have had their comments disabled, click on the Disable Comments checkbox.
To receive notification only for posts that have had their shares disabled, click on the Disable Shares checkbox.
To receive notification only for posts that have had their likes disabled, click on the Disable Likes checkbox.
To receive notification only for posts that have had their comments enabled, click on the Enable Comments checkbox.
To receive notification only for posts that have had their shares enabled, click on the Enable Shares checkbox.
To receive notification only for posts that have had their likes enabled, click on the Enable Likes checkbox.
To receive notification only for posts that have had their comments, shares, and likes enabled, click on the All checkbox.
Conclusion:
To get notifications on your WordPress site, you can use either a plugin or a WordPress feature.
Alternatively, you can use the WordPress feature notifications to get updates on posts and pages on your site.