Sending letters and other items via post is an age old practice in India. In most cases for normal letters and lighter items regular postal services are opted for. But when the mail is too heavy then it is considered as a parcel and parcel delivery services have to be used for its transport from one place to another. The parcel services in India are provided mostly by the postal systems. But apart from this express mail, private courier companies etc also can be utilised for these services. So what all can one send via parcel?