russianprovider.php

См. документацию.

<?php
namespace Bitrix\MessageService\Sender\Traits;
 
use Bitrix\Main\Loader;
use Bitrix\MessageService\Sender\Util;
 
trait RussianProvider
{
    public static function isSupported(): bool
    {
        $region = \Bitrix\Main\Application::getInstance()->getLicense()->getRegion();
 
        return in_array($region, ['ru', 'kz', 'by']);
    }
}