Messages Html -

To prevent text from breaking into multiple lines and keep it as a "solid" single line, apply the white-space property:

If your goal is to preserve exact formatting—including spaces and line breaks—without the browser collapsing them, use the tag: Messages html

Allow messages sent to be text/html instead of text/plain - Drupal To prevent text from breaking into multiple lines

Are you trying to fix a specific display issue in an email, or Messages html