It's better to adjust the width of the compose window if you need to make the lines shorter and easier to read while composing messages. Trying to force line lengths using margins or the Enter key to break lines only results in readability problems for the recipient. Outlook doesn't have an option to set the width of a message - it uses the full width of the message window and wraps text in the window as needed. If the recipient opens the message in a window 500 pts wide, the message would be indented 200 pts from the right edge. As set in this screenshot, the right margin is approximately 200 pts. Recommended setting: keep the right margin triangle at or very near the right edge of the page (identified by red arrow).
