Postal History of Nepal is first wrapped in a mystery, since the sequence of events, the postal sector is not yet clear. Therefore, it becomes necessary to rely on existing materials, as related Mohur Lal (Red Seal) and kings joined the black paper from Nepal and the Rana Prime Ministers, respectively. Information left by previous studies help to determine this issue to some degree. The rules and regulations, although very few published in various irregular intervals also supports this area. In addition, existing postal covers much help reveal many facts about the postal history of Nepal. Kagate Hulak (Post paper) and Thaple Hulak (Post Burden) were known to exist when Prithvi Narayan Shah (king of Nepal from 1768 to 1775). There is no information on any type of postal system in pre-and Lichhavi Lichhavi periods in Nepal. And virtually no information on the system of the Malla dynasty in the kingdoms of postal Valley are known.
However, there is some information about the launch of a regular communication during the time of King Prithvi Narayan Shah (of unified Nepal, from 1768 to 1775), the founder of modern Nepal.
Contacts between Kathmandu, Nuwakot, Gorkha and other areas were so important to the union's campaign (for 1744-1810) that without a good infrastructure, communications, it was almost impossible to control the areas of extreme sleeping with success. Kagate Hulak (Post paper) and Thaple Hulak (Post Burden) is known to have a network in the country during his time (Babu Ram Acharya, 1968, Prithvi Narayan Shree Panchen Maharajdhiraj Shahko Sanchhipta Jivanee Part 3). These primitive, yet so efficient postal systems have been regulated by government messengers and runners who were assigned to carry out orders and official documents (for Kagate Hulak) and cargo of government (Thaple Hulak). The public was not allowed to use the public message as it was used exclusively for government business only. General Bhimsen Thapa (prime minister from 1806 to 1837) was credited as one of the pioneers of modern Nepal reformers.
Among the many improvements introduced by Bhimsen Thapa during the reign of Rajendra Bikram Shah (king of Nepal from 1816 to 1847) postal reform was felt in the state of extreme poverty of much importance in the territory of Nepal on the Mahakali River Mechi river west and east. Previously, before the war from 1814 to 1815 to 1816 (seven months in the first phase, and two months in the second phase = total of nine months) with British India, the territory of Nepal have spread to the river Sutlej west and east of the Tista River. And, because of the lack of well-organized postal system in the newly conquered areas (1768-1815) of the capital, it became very difficult to control so overwhelmed (almost 1,500 kilometers from west to east) Imperial reign. Still, it took several years in the postal system to be adjusted because of this large country with difficult terrain.
During the year, Rajendra Bikram Shah (the king of Nepal, 1817-1847), wide opening of the postal reforms, the creation of several postal routes, there are evidenced Mohurs Lal (red royal seal on documents), their properties.