You must master the art of letter writing to communicate your requests, opinions, concerns, and emotions better. Read further to read samples of all its types. Learn how to structure, format, and proofread your formal letters for professional purposes. See examples, templates, and abbreviations for different situations and recipients. What is a formal letter , and how do you write one? Learn to write a polite formal letter with templates and tips to express yourself effectively. Learn how to write formal and informal letters with different purposes and styles. Find out the format, structure, and tips for letter writing with solved and unsolved examples.