MailType.php

<?php
 
namespace Bitrix\Im\V2\Chat\EntityLink;
 
use Bitrix\Im\V2\Chat\EntityLink;
use Bitrix\Main\Loader;
 
class MailType extends EntityLink
{
    protected const HAS_URL = true;
 
    protected function getUrl(): string
    {
        if (!Loader::includeModule('mail'))
        {
            return '';
        }
 
        return \Bitrix\Mail\Integration\Intranet\Secretary::getMessageUrlForChat((int)$this->entityId, $this->chatId) ?? '';
    }
}