Business letter block style is a formatting style for business letters in which all text is aligned to the left margin, with no indentation for paragraphs. This style is also known as “full block” or “modified block” style.
Block style is the most common business letter format. It is easy to read and understand, and it creates a professional and polished look. Block style is also the preferred format for many types of business correspondence, such as letters of inquiry, sales letters, and cover letters.