The Indian post office application has the following features.
Tracking: You can check the status of the mail booked via Indian post office.
Post office search: Search for the nearest postal departments.
Postage calculator: Calculate the amount for sending the mail from one place to another.
Insurance premium calculator: Check how much premium you have to pay on insurance.
Interest rates: Know the interest rates on the amount that you are going to get by depositing in the post office.