Imap::markUnseen

public function markUnseen($messages)
{
	$result = $this->getFolderToMessagesMap($messages);
	foreach ($result->getData() as $folderFrom => $ids)
	{
		$result = $this->client->unseen($ids, $folderFrom);
		if (!$result->isSuccess() || !$this->client->getErrors()->isEmpty())
		{
			break;
		}
	}
	return $result;
}