Changes in grunion-contact-form.php (v2.0):
412,415c415,419
< $message = __( "Name:" ) . " " . $comment_author . "
< " . __( "Email:" ) . " " . $comment_author_email . "
< " . __( "Website:" ) . " " . $comment_author_url . "
<
---
> $message = '';
> $message .= (empty($comment_author)) ? "" : __( "Name:" ) . " " . $comment_author . "\n";
> $message .= (empty($comment_author_email)) ? "" : __( "Email:" ) . " " . $comment_author_email . "\n";
> $message .= (empty($comment_author_url)) ? "" : __( "Website:" ) . " " . $comment_author_url . "\n";
> $message .= "