messageaccess.php

См. документацию.

<?php
 
namespace Bitrix\Mail\Storage;
 
use Bitrix\Mail\IMessageAccessStorage;
use Bitrix\Mail\Internals\MessageAccessTable;

class MessageAccess implements IMessageAccessStorage
{
 
    public function getCollectionForMessage(\Bitrix\Mail\Item\Message $message): \Bitrix\Mail\Collection\MessageAccess
    {
        return $this->getCollectionByMessageId($message->getId(), $message->getMailboxId());
    }
 
    public function getCollectionByMessageId(int $messageId, int $mailboxId): \Bitrix\Mail\Collection\MessageAccess
    {
        $rows = MessageAccessTable::getList(array(
            // 'select' => array('ENTITY_TYPE', 'ENTITY_ID'),
            'filter' => array(
                '=MESSAGE_ID' => $messageId,
                '=MAILBOX_ID' => $mailboxId,
            ),
        ))->fetchAll();
 
        return \Bitrix\Mail\Collection\MessageAccess::fromArray($rows);
    }
}