A good news letter, memo or email is used in a situation when a company wants to bring a new product or offer to the customer's attention. These letters will briefly inform the customer about the purpose of the business and include information about what is being offered. The tone of the letter is posititve in order to hold the reader's interest, and it should motivate them to want to do business with your company. 

 

 

 

Bad news letters are used when a company must alert a customer or employee about an unfavorable topic. If an employee has been caught breaking a store policy, for example, the manager may address the problem by creating a document that explains why this is an issue, consequences of breaking this policy and solutions to help avoid this complication. This type of letter may create tension in the work place if it is not handled professionally; for that reason, it should be written in a positive, non-accusatory manner.

 

 

 

A proposal is used in situations when someone in a company or a customer of a company would like to offer a suggestion that could potentially benefit the company or help improve the quality of services a company provides. A proposal targets multiple readers within a company and therefore includes detailed explanations of the idea and the benefits it offers. The proposal should be written persuasively in order to win the audience's support of the idea.