Indian Post Office Act, 1898
36. Power to give effect to arrangements with other countries
(1) Where arrangements 37[made] with the United Kingdom , or with any British possession, 38[39[***] or foreign country are in force], for the transmission by post of registered, insured or value-payable postal articles between 5[ India ] and the United Kingdom or such possession 40[41[***] or country], the Central Government may make rules to give effect to such arrangements.
(2) In particular and without prejudice to the generality of the foregoing power, such rules may prescribe-
(a) the form of declaration to be made by the senders of such postal articles as aforesaid; and
(b) the fees to be charged in respect thereof