Add headers to LearnDash ProPanel dashboard messages

gistfile1.php

static function send_dashboard_emails($course_progress_data = null) { 
		if(empty($_POST["submit_propanel_email"]) || empty($_POST["course_id"]) || empty($_POST[ "learndash_propanel_message"]) || empty($_POST[ "learndash_propanel_subject"]) )
			return; 

		$course_id = $_POST["course_id"];

		if(is_null($course_progress_data))
	    	$course_progress_data = SFWD_LMS::course_progress_data($course_id);

	    if(empty($course_progress_data))
	    	return;

		$course_id = $_POST["course_id"];
		if(empty($course_progress_data))
			return; 
		$users = $course_progress_data;
    	$email_to = array();
        // Check if the "from" input field is filled out      
        $message = stripslashes($_POST[ "learndash_propanel_message"]);
        $subject = stripslashes($_POST[ "learndash_propanel_subject"]);
        
        // BHWW - Get the website URL, remove the protocol, create the email headers
        $url     = get_bloginfo( 'url' );
        $regex   = '#^https?://#';
        $url     = preg_replace( $regex, '', $url );
        $headers = 'From: ' . get_bloginfo( 'name' ) . ' <no-reply@' . $url . '>';

        // message lines should not exceed 70 characters (PHP rule), so wrap it
        $message = wordwrap($message, 70);

        // send mail
        foreach ($users as $user) {
                //$email_to[] = $user['email'];
        	wp_mail($user['email'],$subject,$message,$headers); // BHWW - added $headers
        }

        return __("Message Sent", "ld_propanel");                            
	}