This document provides information and examples about taking and leaving messages as well as writing notes. It discusses the differences between formal and informal notes and messages. For informal notes, it recommends including an opening that greets the recipient, a body stating the purpose and asking how the person is, concluding remarks, and an invitation to write back. The closing should summarize thoughts and say goodbye. The signature should fit the tone of the note and include the writer's name. Examples are provided of office messages, an informal message, and an informal thank you note.