There are several of them you could use, DHL being one of them. However, if you are looking for some cost savings also, then Q-Post would be the best. They have a service called EMS (Express Mail Service) commonly known as Bareed Mumtaz here. It works in coordination with major post offices in all countries. You can find out about this service from the main post office in your city. You can track your documents once dispatched through their tracking system.