Disable WordPress plugin/theme auto-update email notifications

disable-plugin-theme-auto-update-email-notifications.php

<?php

/**
 * Plugin Name: Disable plugin/theme auto-update email notficiations
 * Description: Disable plugin/theme auto-update email notficiations
 * Author: Paul V. Biron/Sparrow Hawk Computing
 * Author URI: https://sparrowhawkcomputing.com/
 * Plugin URI: https://gist.github.com/pbiron/ec0d7d0bf84308c905acaf8900764aec
 * Version: 0.1.0
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 */

/*
 * Note: I do not recommend using this plugin, because I think receiving
 * the notficiations is important.  But for those that don't want them,
 * this will do the trick.
 *
 * @link https://core.trac.wordpress.org/ticket/50988
 */
add_filter( 'auto_plugin_update_send_email', '__return_false' );
add_filter( 'auto_theme_update_send_email', '__return_false' );