Sender::setEmailLimit

static function setEmailLimit(string $email, int $limit, bool $quite = true): bool
{
	$address = new BitrixMainMailAddress($email);

	if (!$address->validate())
	{
		return false;
	}

	$email = $address->getEmail();

	$cache = new CPHPCache();
	$cache->clean($email, '/main/mail/limit');

	$res = InternalSenderTable::getList(array(
		'filter' => array(
			'IS_CONFIRMED' => true,
			'=EMAIL' => $email,
		),
		'order' => array(
			'ID' => 'DESC',
		),
	));

	if ($limit < 0)
	{
		$limit = 0;
	}

	$hasChanges = false;
	while ($item = $res->fetch())
	{
		$oldLimit = (int)($item['OPTIONS']['smtp']['limit'] ?? 0);
		if ($item['OPTIONS']['smtp'] && $limit !== $oldLimit)
		{
			$item['OPTIONS']['smtp']['limit'] = $limit;
			$updateResult = InternalSenderTable::update($item['ID'], ['OPTIONS' => $item['OPTIONS']]);
			$hasChanges = true;
			if (!$quite && $limit < $oldLimit && $updateResult->isSuccess())
			{
				$event = new Event('main', self::MAIN_SENDER_SMTP_LIMIT_DECREASE, ['EMAIL'=>$email]);
				$event->send();
			}
		}
	}

	return $hasChanges;
}