zzio

Plugin Update Message Customizer changes the default “There is a new version of PLUGIN available.” message on WordPress’ Plugin listing page.
This is useful for multiple scenarios: 
* If using WordPress within a dev/staging/live production environment, this plugin is great to install on the live and staging servers so that end users won’t update a plugin and therefore break the tracked remote branch. 
* On sites where you only want specific users to update the plugins, this will prevent users from clicking “update now.” 
* If you want to add additional options (e.g., “View version X.Y.Z details, update now, or mark as in testing.”) to the plugin new version message, e.g., “mark as in testing” to let others know the plugin is currently being tested and they should not yet update it on production.
Of course, other plugins and functions would prevent all plugin notifications. However, for the average user who logs into their live/production site instead of local/dev, this would still allow them to see that updates EXIST, however will just prevent them from performing them in an environment they should not be updated in.
Upcoming features: 
* Backwards compatibility (to be tested starting with WordPress 4.5) 
* Ability to hide the number of plugins with updates next to “Plugins” in admin sidebar) 
* Ability to hide all update notifications 
* Ability to prevent all automatic updates 
* Action on plugins with update message to apply the label “In testing,” which lets other users know that the plugin’s update is currently being tested in dev 
* Functionality to hide the plugin in the Plugins listing page

Notification Customizer

Plugin Update Message Customizer changes the default "There is a new version of PLUGIN available." message on Wordpress' Plugin listing …

entertheraptor

Time to Update sends you a nicely formatted email notification whenever updates are available for your WordPress core, installed plugins, or themes.
For security conscious site owners who want to keep their site up to date, Time to Update provides a simple, lightweight, and set-and-forget solution. It ensures you never miss a critical core security patch or a plugin update just because you haven’t logged into the dashboard lately.
The plugin runs quietly in the background using WordPress cron. It uses standard WordPress update channels and does not rely on third-party SaaS services.
<h3>Features</h3>
<ul>
<li>Sends email notifications for WordPress Core, Plugin, and Theme updates.</li>
<li>“Settings” link included directly in the Plugins list for quick access.</li>
<li>Clean, readable HTML email format with automatic plain-text fallback.</li>
<li>You can set your notification email address and update check frequency.</li>
<li>Manual “Check Now” and “Send Test Email” buttons for instant verification.</li>
<li>Lightweight and self-contained with no external SaaS dependencies.</li>
</ul>

Time to Update

Sends email notifications when WordPress core, plugin, or theme updates are available. Simple, lightweight, and set-and-forget.

Notification Customizer vs Time to Update