It speaks to the addressee on behalf of the writer. Every letter should be clear human helpful and as friendly as the topic allows. Pin On At A simple and uncluttered writing style goes a long way in communicating the message to the reader. Importance of writing a good business letter . These business letters are used as reference material for any future transactions made in the business industry. It is different from the usual letters we write in a sense that it appeals to reason rather than emotion. The Seven Cs of Business Letter Writing Effective letter writing boils down to knowing why you are writing a letter understanding your readers needs and then clearly writing what you need to say. It is used to communicate ideas in a formal way between people andor companies on a professional level. They also provide valuable information on business-related matters and serve a legal purpose. They may also act as proof which can hold good in a court of law. For effecti...