Mutes update email on beta site

otto-mute.php

<?php
/**
 * @package otto-mute
 * @version 0.1
 */
/*
Plugin Name: Otto Mute
Description: Mute's daily email from beta site updates 

Author: Robert Dall & Otto Wood
Version: 0.1
Author URI: http://robertdall.com
*/


// Mutes Email on beta site

function update_no_email_on_success($send, $type, $core_update, $result) {
  if ( $type == 'success' ) {
    $send = false;
  }
  return $send;
}

add_filter('auto_core_update_send_email', 'update_no_email_on_success', 10, 4);

// Mutes daily debug email
add_filter('automatic_updates_send_debug_email','__return_false');