Change WordPress auto update email address

change-auto-update-email-address.php

<?php
/*
Plugin Name: Change WordPress auto update email address
Plugin URI: http://www.iweb.co.uk/
Description: Change the email address auto update notifications are sent to following an automatic update.
Version: 1.0
Author: iWeb
Author URI: http://www.iweb.co.uk/
*/
function iweb_filter_auto_update_email( $email ) {
	$email['to'] = 'username@example.com'; // Override email address
	return $email;
}
add_filter( 'auto_core_update_email', 'iweb_filter_auto_update_email', 1 );