Letter Paragraphs: Professional letter paragraphs should be relatively concise. The first paragraph may include a brief friendly opening and a concise explanation of your reason for writing. The second paragraph (and any subsequent paragraphs) should expand upon your reason for writing. The final paragraph should restate your reason for writing and, if applicable, state your plan of action (or request some type of action be taken by the reader).
How to Write Business Letter: Suppose you are writing a business letter for the very first time. You will ask yourself the question ‘how to write a business letter’. There is no need to scratch your head. All Business letters follow a fixed format. The answer to the question how to write a business letter is broadly classified into four categories.