The letter a person is received from a fried or a relative is the informal letter, many times that kind of letter makes the person emotional and happy as the letter make the people remember about their experience with friends.
Informal letter is always send by the person who is known to them and have a bond or relation. Informal letters are very self-generated in manner.
This kind of letter is for the newsy purpose, and the tone of the letter is friendly and joyously.
Thus, letter makes the person emotional and happy
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