There is a hook 这应该可以让您更改数据--comment_notification_text.

add_action(
  \'comment_notification_text\',
  function($notify_message,$comment_id) {
    var_dump($notify_message,$comment_id);
    die;
  },
  10,2
);

add_filter(
  \'comment_notification_text\',
  function($notify_message) {
    $notify_message = explode("\\n",$notify_message);
    foreach ($notify_message as $k => $line) {
      $header = trim(substr($line,0,strpos($line,\':\')));
      switch ($header) {
        case \'E-mail\':
        case \'URL\' :
        case \'Whois\':
          unset($notify_message[$k]);
        break;
        case \'Author\' :
          $pat = \'([^(]+)\\(.*$\';
          $notify_message[$k] = trim(preg_replace(\'|\'.$pat.\'|\',\'$1\',$line));
        break;
      }
    }
    $notify_message = implode("\\n",$notify_message);
    return $notify_message;
  }
);