The emails sent from the theme can be managed from Theme Options – Advanced – Email Management. The email management text area includes an editor.
For theme version 1.70 and newer you can leave blank the subject field and the notification will NOT be sent. This applies to any notification from wp-admin – theme options -> email management.
Use text mode and <br> tag for new line.
IMPORTANT: <br> can be added only in Text mode. If switch to the Visual mode from text editor it is removed.