Letters are the symbols used as an alphabet in a language. The English language has 26 alphabets or letters. A combination of letters is used to form a word. Another interpretation of the word letter is a written form of communication sent by post or by a messenger. Letters are basically of two types- formal letters and informal letters. Informal letters are written in a casual tone and can be long while the formal letters are written precisely and in a well defined manner.
In a letter, there are three parts i.e. the salutation, body and the conclusion. To make your letter effective, make sure that you write to the point and don’t go astray from the main point of concern. In the words of Pam Brown, “A friendship can weather most things and thrive in thin soil; but it needs a little mulch of letters and phone calls and small, silly presents every so often - just to save it from drying out completely.”