function getOpenStatistics($count = 100, $offset = 0, $recipient = NULL,
		$tag = NULL, $clientName = NULL, $clientCompany = NULL, $clientFamily = NULL,
		$osName = NULL, $osFamily = NULL, $osCompany = NULL, $platform = NULL,
		$country = NULL, $region = NULL, $city = NULL) {

		$query = array();
		$query['count'] = $count;
		$query['offset'] = $offset;
		$query['recipient'] = $recipient;
		$query['tag'] = $tag;
		$query['client_name'] = $clientName;
		$query['client_company'] = $clientCompany;
		$query['client_family'] = $clientFamily;
		$query['os_name'] = $osName;
		$query['os_family'] = $osFamily;
		$query['os_company'] = $osCompany;
		$query['platform'] = $platform;
		$query['country'] = $country;
		$query['region'] = $region;
		$query['city'] = $city;

		return new DynamicResponseModel($this->processRestRequest('GET', '/messages/outbound/opens', $query));
	}