Ever since humans appeared on the earth, they have used different means of communication. But, the pace of change has been rapid in modern times. Long distance communication is far easier without physical movement of the communicator or receiver. Personal communication and mass communication including television, radio, press, films, etc. are the major means of communication in the country .
The Indian postal network is the largest in the world. It handles parcels as well as personal written communications. Cards and envelopes are considered first–class mail and are airlifted between stations covering both land and air. The second–class mail includes book packets, registered newspapers and periodicals. They are carried by surface mail, covering land and water transport.
To facilitate quick delivery of mails in large towns and cities, six mail channels have been introduced recently and are called Rajdhani Channel, Metro Channel, Green Channel, Business Channel, Bulk Mail Channel and Periodica.
TYPES OF COMMUNICATION:-
INTRAPERSONAL COMMUNICATION
Intra-personal Communication — is the kind of communication that occurs within us. It involves thoughts, feelings, and the way we look at ourselves. Because intra-personal communication is centered in the self, you are the only sender-receiver. The message is made up of your thoughts and feelings. The channel is your brain, which processes what you are thinking and feeling. There is feedback in the sense that you talk to yourself, or discard certain ideas and replace them with others. Even though you are not directly communicating with others in intra-personal communication, the people and the experiences you have had determine how you “talk” to yourself. For example, if you had a good day, you are likely to look at your-self in a positive way. If a teacher was disappointed with your work, or if you had a fight with a fellow student, you are likely to focus more on your depression or anger. You can never look at yourself without being influenced by the relationships you have with others.
MASS COMMUNICATION

Mass communication provides entertainment and creates awareness among people about various national programmes and policies. It includes radio, television, newspapers, magazines, books and films. All India Radio (Akashwani) broadcasts a variety of programmes in national, regional and local languages for various categories of people, spread over different parts of the country. Doordarshan, the national television channel of India, is one of the largest terrestrial networks in the world. It broadcasts a variety of programmes from entertainment, educational to sports, etc. for people of different age groups. We can say that means of transport and communication serve as lifelines of our nation and its modern economy.