KZeni

Disables the default notification emails sent by a site after an automatic theme and/or plugin update. Simply activate the plugin to disable these email notifications (allows failure notices through unless setting is enabled to disable these as well).
This is a simple & lightweight plugin that simply uses the official filters made available as of WordPress 5.5 to disable these email notifications upon activation. It does let update failure notifications through by default, but the Settings => General page has a setting to disable these as well.
Check things out on GitHub at <a href="https://github.com/KZeni/Disable-WordPress-Theme-and-Plugin-Auto-Update-Emails" rel="nofollow ugc">https://github.com/KZeni/Disable-WordPress-Theme-and-Plugin-Auto-Update-Emails</a>

Disable Theme and Plugin Auto-Update Emails

Disables the default notification emails sent by a site after an automatic theme and/or plugin update. Simply activate the plugin to disable these ema …

Shail Mehta

Plugin Can remove WordPress Version Update Notification, Remove Plugin Update Notification 
& Also Remove Theme Update Notification.

Remove Update Notification

Plugin , Theme, Wordpress Version Update Removal .

Disable Theme and Plugin Auto-Update Emails vs Remove Update Notification