How to disable the “Your site has updated to WordPress x.y.z” admin email?

Using the automatic update of my self-hosted WordPress blogs, I configured automatic updates of both the WordPress core as well as WordPress plugins and themes (through this plugin).

Whenever a core update occurs, I get an email like:

Your site has updated to WordPress 3.9.2

Howdy! Your site at has been updated automatically
to WordPress 3.9.2.

No further action is needed on your part. For more on version 3.9.2,
see the About WordPress screen:

If you experience any issues or need support, the volunteers in the support forums may be able to help.

The WordPress Team

I understand that I can completely disable administrative notification emails but I would prefer to only disable the above notification.

Therefore my question is:

How to disable update notification emails in WordPress?

Solutions Collecting From Web of "How to disable the “Your site has updated to WordPress x.y.z” admin email?"

In your functions.php add:

add_filter( 'auto_core_update_send_email', '__return_false' );

An alternative is to create a simple Must-use plugin so this doesn’t depend on the theme.

Create a file wp-content/mu-plugins/disable-auto-update-mail.php

Plugin Name: Disable Auto Update Mails
Plugin URI:
Version: 1.0
Author: kraftner

add_filter( 'auto_core_update_send_email', '__return_false' );

This can’t be disabled by a user and works independent from any themes.