Whitespace, also known as negative space, refers to the unmarked or empty areas surrounding the elements of a design, such as text, images, and graphics. It is a crucial component of visual design that serves more than just an aesthetic function. Whitespace helps to create a sense of balance, organization, and clarity by preventing the design from appearing cluttered or overwhelming. By allowing content to "breathe," whitespace improves readability and comprehension, making it easier for viewers to focus on and process the information presented. In email design, effective use of whitespace can guide the recipient's eye to key messages and calls to action, enhancing the overall user experience and engagement.