In this article, we explore the importance of reviewing a full block letter format example, review how to write one, discuss some advantages of using this format, and provide examples to help you learn more. Learning about this letter format may help you create your own full block letters more effectively. This means that no components of the letter appear in the centre of a line, are indented, or start from the right margin. Full block letter format is a type of business letter format where all lines begin on the left margin.