The postage on inland letters shall be prepaid by means of postage stamps affixed or impressed by a stamping die or franking machine.
The rates of postage on inland letters forwarded by means of road or surface transport shall be Rs.10.00 per 20 grams or part thereof.
Any article found in the letter post which may not be transmitted thereby shall, if admissible as a parcel, be transferred to the parcel post and surcharged at parcel rates of postage as a parcel irregularly posted.
No letter may exceed 610 mm in length, 300 mm in width and 300 mm in depth.
Unpaid and insufficiently paid Letters
If the postage on any letter is not prepaid, charges at double the postage, shall be recovered from the addressee before the letter is delivered to him.
If the postage on any letter is insufficient, double the amount of the deficiency, subject to a minimum surcharge of Rs.10.00 shall be recovered from the addressee before the letter is delivered to him.