A system to apply persona styles to written communications. The system includes a communication analyzer and a modification engine. The communication analyzer receives an element of original content of a written communication. The communication analyzer also receives a selection of a persona style. The selected persona style defines a communication style. The modification engine presents a substitute element to a user in response to a determination that the element of the original content of the written communication is incompatible with the selected persona style. The substitute element is compatible with the selected persona style.