in the email template file, try editing the style.
change:
<td style="font-size: 12px; padding: 3px;"><?php echo(str_replace("\n","<BR />",(is_array($pval)?implode(", ",$pval):$pval))); ?></td>
to:
<td style="font-size: 12px; padding: 3px;white-space:pre-wrap;"><?php echo(str_replace("\n","<BR />",(is_array($pval)?implode(", ",$pval):$pval))); ?></td>