World's 1st Parcel Rocket Dispatched was done in Sikkim in 1935

Sikkim is the first country in the world to successfully dispatch a parcel containing small quantities of useful articles, such as medicine, tobacco, tea, sugar, etc., by means of a rocket.

The world's first parcel dispatch over the river was on April 10 at 3.30 pm over River Rani Khola, written as Ranikhali on the covers. CE Dudley discharged the main rocket.

The sixth firing on April 10 at 3.35 pm established a new world record when, for the first time, a parcel was carried utilizing a rocket. The parcel included 12 items: a packet of tea, sugars, a spoon, a chief, a toothbrush, cigarettes, and others. Dudley fired the parcel rocket over the river Rani Khola from Surumsa to Ray. The river was crossed when the parcel reached its destination, and Smith opened the parcel. All the articles were perfectly intact. In the missives, the word “mail” was cancelled by hand, and the word “Parcel’ was written instead.

The rockets were apparently fairly crude, resembling larger versions of fireworks. They were approximately 6 feet long, with the body (which carried the mail) 2 feet long. They were launched by lighting a touch paper from a sloping stand aimed at the intended target's general direction. Oriental Fireworks Company, based in Calcutta, provided all the rockets to Smith. "The rockets were launched by lighting a touch paper from a sloping stand aimed in the general direction of the intended target",