You can use Packlink to ship your parcel to South America. Please remember that Latin American countries are very restrictive in terms of policies of export and import (type of merchandise, value, etc.)
Therefore we recommend you to visit the customs website of the country of destination before purchasing the shipment in order to know what you can send and what not.
Customs invoice are required for all the shipments to Latin America.
There are many products that needs additional documentation (double use letter, certificate of non dangerous goods, dispatch authorization, etc.)
Also you should keep in mind that Packlink offers the shipping, service does not include custom taxes.
Below is a list of links to the main customs.
We hope it helps you :)
. Costa Rica
. El Salvador
. República Dominicana
. Trinidad y Tobago