This problem only occurs in html enabled cforms.

Let's say I've textarea field in cforms called "Message".

Then I enter this value and sent it.

This is the content of the received message:

You see, the problem is the linefeed does not exist in the message.

The correct result should be like this:

For the time being, the solution that I use is by surrounding variable $_POST[$current_field] with nl2br on the statement in line 213 in lib_nonajax.php:

$value = $html_show ? nl2br($_POST[$current_field]) : $_POST[$current_field];

I also move this line:

$html_show = ( substr($cformsSettings['form'.$no]['cforms'.$no.'_formdata'],2,1)=='1' )?true:false;

to somewhere above of this statement:

Note: I'm using cform v10.1 and not using ajax. I haven't checked this issue on the ajax version.