It was now ordered that registration upon letters, the fee for which was still fixed at 4 annas, should be prepaid in postage stamps. The penal clauses relating to counterfeiting stamps had been included in the Indian Penal Code, Act XLV of 1860, and were therefore omitted from this Act. The other penal clauses were practically the same as those that existed in the Act of 1854, and the principle is again laid down of the non-responsibility of Government for any loss or damage which may occur in respect of anything entrusted to the Post Office for conveyance.

From 1866 the work of the Post Office began to develop enormously, and its functions had to be gradually extended to meet the growing needs of the public. In 1869 the charge on redirected letters was abolished and the letter postage rates were further reduced as follows:—

For letters not exceeding ½ tola6pies.
Exceeding ½ tola but not exceeding 1 tola1anna.
For every additional tola or fraction thereof1"

The antiquated system of making parcel post rates vary with distance could no longer be maintained, and in 1871 a system of rates which varied with weight, irrespective of distance, was introduced. A parcel post service was established between India and England in 1873, but the collection and distribution of parcels were at first effected through the agency of the Peninsular and Oriental Steamship Company, and it was not until 1885 that the Post Offices of both countries undertook the management of the parcel post. In 1873 special postage rates were introduced for official articles, namely:

Not exceeding ½ tola½anna.
Not exceeding 10 tolas1"
Not exceeding 20 tolas5annas.
Not exceeding 30 tolas10"
Every additional 10 tolas5"

At the same time it was laid down that official covers from Government offices should be prepaid by means of service postage stamps.

Under the provision of the Act of Parliament (III-IV Vict. Cap. 69) soldiers and seamen were allowed the privilege of sending letters not exceeding half an ounce in weight at the rate of 1d. for each letter. This rate was introduced into India in 1854, and 8 pies was reckoned the equivalent of 1d. In 1874 the postage on such letters was fixed at 9 pies for half an ounce owing to the increase in the rate of exchange. In 1899 the Imperial Penny Postage scheme was introduced, by which the initial rate of postage to the United Kingdom and to certain British colonies and possessions was fixed at 1 anna for a letter not exceeding half an ounce in weight, so that the privilege enjoyed by soldiers and seamen was no longer of any advantage, and when in 1907 the initial rate under the Imperial Penny Postage Scheme was raised from half an ounce to 1 ounce there was no further object in retaining this special concession.

In 1877 the Value-Payable or Cash on Delivery system was introduced, and in 1878 the Post Office undertook the insurance of letters and parcels. At first there was no limit to the amount for which an article could be insured, until a claim for the contents of a parcel insured for Rs.60,000 showed the enormous liabilities which the Department might incur under this system. Accordingly, in 1890 the limit was fixed at Rs.1000, but was raised in 1898 to Rs.2000, and the procedure was greatly simplified. The insurance fee was originally fixed at one-half per cent, which was subsequently reduced to a quarter, and in 1905 to one-eighth per cent.

Previous to 1880 the money order work of the country was carried on by the Government Treasuries, and the procedure was rather cumbersome; in that year it was handed over to the Post Office, with the result that in a few months the number of money orders issued and paid quadrupled. The extent to which money order business has increased may be gauged from the fact that the value of inland money orders in 1880-81 was 45 millions, and in 1917-18 it had increased to over 617 millions of rupees.