Matt Radford

Stop WordPress sending anything but essential data during the update check.
By default, WordPress sends the following data during the version update check:
<ul>
<li>Current WordPress version</li>
<li>Language</li>
<li>PHP version</li>
<li>MySQL version</li>
<li>If multisite in enabled</li>
<li>Number of websites the WordPress install is running (this will be 1 unless it is a multisite)</li>
<li>Number of users</li>
<li>The WordPress database version during initial installation</li>
</ul>
The WordPress dashboard does not currently provide a way to opt-out of this data collection, but WordPress 4.9 introduced the ability to change whether this data is sent.
This plugin ensures only essential data – current WordPress version and language – are sent during the update check.
There are no options to configure with this plugin.

Update Privacy

Great plugin, very well written. Thanks for sharing.

Thanks for sharing

Stop WordPress sending anything but essential data during the update check.

Alex Moss

Peadig

Disables the default notification email sent by WordPress for an automatic core update. Simply activate the plugin to disable the notification email 🙂
<ul>
<li><a href="http://peadig.com/wordpress-plugins/disable-wordpress-core-update-email/" rel="nofollow ugc">Disable WordPress Core Update Email</a> Plugin homepage.</li>
<li>More <a href="http://peadig.com/wordpress-plugins/" rel="nofollow ugc">WordPress Plugins</a>.</li>
<li>Peadig: A <a href="http://peadig.com/" rel="nofollow ugc">WordPress Bootstrap</a> theme framework.</li>
</ul>

Disable WordPress Core Update Email

The simplicity of the plugin helps it be lightweight & easy to use.

That also means the one line of active PHP code that it consists of (it then being what WordPress recommends in its current documentation per https://wordpress.org/support/article/configuring-automatic-background-updates/#disable-emails-via-filter) is likely to continue to work exactly as expected unless WordPress were to completely overhaul its setup regarding this (with there appearing to be no plans for this.) Especially considering it's using a filter so it's even more flexible if things were to change in the future (won't outright break things due to a code error beyond WordPress doing a fundamental change to a core function like add_filter or __return_false & that'd then break the majority of plugins & themes out there [they'd need a good reason for doing so & it appears they obviously have no plans for doing that either.])

Does exactly what it says it does (even 5 years since last update)

Disables the default notification email sent by WordPress for an automatic core update. Simply activate the plugin to disable the notification email : …

Update Privacy vs Disable WordPress Core Update Email