$email = new eMail();
         $email->set_email($mail);
         $success &= $email->mark2read($USER->id, $courseid, true);
     }
     if ($success) {
         notify(get_string('toreadok', 'block_email_list'), 'notifysuccess');
     } else {
         notify(get_string('failmarkreaded', 'block_email_list'));
     }
     break;
 case 'tounread':
     $success = true;
     foreach ($mailids as $mail) {
         $email = new eMail();
         $email->set_email($mail);
         $success &= $email->mark2unread($USER->id, $courseid, true);
     }
     if ($success) {
         notify(get_string('tounreadok', 'block_email_list'), 'notifysuccess');
     } else {
         notify(get_string('failmarkunreaded', 'block_email_list'));
     }
     break;
 case 'move2folder':
     // In variable folderid
     $success = true;
     // Move mails -- This variable is an array of ID's
     if (is_array($mailid)) {
         foreach ($mailid as $mail) {
             // Get foldermail reference
             $foldermail = email_get_reference2foldermail($mail, $folderoldid);