diff --git a/plugins/kolab_folders/kolab_folders.js b/plugins/kolab_folders/kolab_folders.js
index b9d92258..2dac049b 100644
--- a/plugins/kolab_folders/kolab_folders.js
+++ b/plugins/kolab_folders/kolab_folders.js
@@ -1,125 +1,125 @@
 /**
  * Client script for the Kolab folder management/listing extension
  *
  * @author Aleksander Machniak <machniak@kolabsys.com>
  *
  * @licstart  The following is the entire license notice for the
  * JavaScript code in this file.
  *
  * Copyright (C) 2011, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Affero General Public License for more details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  * @licend  The above is the entire license notice
  * for the JavaScript code in this file.
  */
 
 window.rcmail && rcmail.env.action == 'folders' && rcmail.addEventListener('init', function() {
     var filter = $(rcmail.gui_objects.foldersfilter),
         optgroup = $('<optgroup>').attr('label', rcmail.gettext('kolab_folders.folderctype'));
 
     // remove disabled namespaces
     filter.children('option').each(function(i, opt) {
         $.each(rcmail.env.skip_roots || [], function() {
             if (opt.value == this) {
                 $(opt).remove();
             }
         });
     });
 
     // add type options to the filter
     $.each(rcmail.env.foldertypes, function() {
         optgroup.append($('<option>').attr('value', 'type-' + this).text(rcmail.gettext('kolab_folders.foldertype' + this)));
     });
 
     // overwrite default onchange handler
     filter.attr('onchange', '')
         .on('change', function() { return kolab_folders_filter(this.value); })
         .append(optgroup);
 });
 
 window.rcmail && rcmail.env.action != 'folders' && $(document).ready(function() {
     // Add onchange handler for folder type SELECT, and call it on form init
-    $('#_ctype').change(function() {
+    $('#_folderctype').change(function() {
         var type = $(this).val(),
             sub = $('#_subtype'),
             subtypes = rcmail.env.kolab_folder_subtypes[type] || {};
 
         // reset subtype selector
         sub.html('<option value=""></option>');
 
         // append available subtypes for the given folder type
         $.each(subtypes, function(val, label) {
             $('<option>').attr('value', val).text(label).appendTo(sub);
         });
 
         // And re-set subtype
         sub.val(rcmail.env.kolab_folder_subtype);
     });
 });
 
 function kolab_folders_filter(filter)
 {
     var type = filter.match(/^type-([a-z]+)$/) ? RegExp.$1 : null;
 
     rcmail.subscription_list.reset_search();
 
     if (!type) {
         // clear type filter
         if (rcmail.folder_filter_type) {
             $('li', rcmail.subscription_list.container).removeData('filtered').show();
             rcmail.folder_filter_type = null;
         }
 
         // apply namespace filter
         rcmail.folder_filter(filter);
     }
     else {
         rcmail.folder_filter_type = type;
         rcmail.subscription_list.container.children('li').each(function() {
             kolab_folder_filter_match(this, type);
         });
     }
 
     return false;
 }
 
 function kolab_folder_filter_match(elem, type)
 {
     var found = 0, cl = elem.className || '',
         $elem = $(elem),
         children = $('ul', elem).children('li');
 
     // subfolders...
     children.each(function() {
         found += kolab_folder_filter_match(this, type);
     });
 
     if (found || cl.match(new RegExp('type-' + type))
         || (type == 'mail' && !children.length && !cl.match(/(^| )type-([a-z]+)/))
     ) {
         if (found || !$elem.is('.virtual')) {
             found++;
         }
     }
 
     if (found) {
         $elem.removeData('filtered').show();
     }
     else {
         $elem.data('filtered', true).hide();
     }
 
     return found;
 }
diff --git a/plugins/kolab_folders/kolab_folders.php b/plugins/kolab_folders/kolab_folders.php
index b265eea8..de1601b8 100644
--- a/plugins/kolab_folders/kolab_folders.php
+++ b/plugins/kolab_folders/kolab_folders.php
@@ -1,765 +1,782 @@
 <?php
 
 /**
  * Type-aware folder management/listing for Kolab
  *
  * @author Aleksander Machniak <machniak@kolabsys.com>
  *
  * Copyright (C) 2011-2017, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
  * published by the Free Software Foundation, either version 3 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Affero General Public License for more details.
  *
  * You should have received a copy of the GNU Affero General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
 class kolab_folders extends rcube_plugin
 {
     public $task = '?(?!login).*';
 
     public $types      = array('mail', 'event', 'journal', 'task', 'note', 'contact', 'configuration', 'file', 'freebusy');
     public $subtypes   = array(
         'mail'          => array('inbox', 'drafts', 'sentitems', 'outbox', 'wastebasket', 'junkemail'),
         'event'         => array('default', 'confidential', 'private'),
         'task'          => array('default', 'confidential', 'private'),
         'journal'       => array('default'),
         'note'          => array('default'),
         'contact'       => array('default'),
         'configuration' => array('default'),
         'file'          => array('default'),
         'freebusy'      => array('default'),
     );
     public $act_types  = array('event', 'task');
 
     private $rc;
     private static $instance;
     private $expire_annotation = '/shared/vendor/cmu/cyrus-imapd/expire';
 
 
     /**
      * Plugin initialization.
      */
     function init()
     {
         self::$instance = $this;
         $this->rc = rcube::get_instance();
 
         // load required plugin
         $this->require_plugin('libkolab');
 
         // Folder listing hooks
         $this->add_hook('storage_folders', array($this, 'mailboxes_list'));
 
         // Folder manager hooks
         $this->add_hook('folder_form', array($this, 'folder_form'));
         $this->add_hook('folder_update', array($this, 'folder_save'));
         $this->add_hook('folder_create', array($this, 'folder_save'));
         $this->add_hook('folder_delete', array($this, 'folder_save'));
         $this->add_hook('folder_rename', array($this, 'folder_save'));
         $this->add_hook('folders_list', array($this, 'folders_list'));
 
         // Special folders setting
         $this->add_hook('preferences_save', array($this, 'prefs_save'));
 
         // ACL plugin hooks
         $this->add_hook('acl_rights_simple', array($this, 'acl_rights_simple'));
         $this->add_hook('acl_rights_supported', array($this, 'acl_rights_supported'));
     }
 
     /**
      * Handler for mailboxes_list hook. Enables type-aware lists filtering.
      */
     function mailboxes_list($args)
     {
         // infinite loop prevention
         if ($this->is_processing) {
             return $args;
         }
 
         if (!$this->metadata_support()) {
             return $args;
         }
 
         $this->is_processing = true;
 
         // get folders
         $folders = kolab_storage::list_folders($args['root'], $args['name'], $args['filter'], $args['mode'] == 'LSUB', $folderdata);
 
         $this->is_processing = false;
 
         if (!is_array($folders)) {
             return $args;
         }
 
         // Create default folders
         if ($args['root'] == '' && $args['name'] = '*') {
             $this->create_default_folders($folders, $args['filter'], $folderdata, $args['mode'] == 'LSUB');
         }
 
         $args['folders'] = $folders;
 
         return $args;
     }
 
     /**
      * Handler for folders_list hook. Add css classes to folder rows.
      */
     function folders_list($args)
     {
         if (!$this->metadata_support()) {
             return $args;
         }
 
         // load translations
         $this->add_texts('localization/', false);
 
         // Add javascript script to the client
         $this->include_script('kolab_folders.js');
 
         $this->add_label('folderctype');
         foreach ($this->types as $type) {
             $this->add_label('foldertype' . $type);
         }
 
         $skip_namespace = $this->rc->config->get('kolab_skip_namespace');
         $skip_roots     = array();
 
         if (!empty($skip_namespace)) {
             $storage = $this->rc->get_storage();
             foreach ((array)$skip_namespace as $ns) {
                 foreach((array)$storage->get_namespace($ns) as $root) {
                     $skip_roots[] = rtrim($root[0], $root[1]);
                 }
             }
         }
 
         $this->rc->output->set_env('skip_roots', $skip_roots);
         $this->rc->output->set_env('foldertypes', $this->types);
 
         // get folders types
         $folderdata = kolab_storage::folders_typedata();
 
         if (!is_array($folderdata)) {
             return $args;
         }
 
         // Add type-based style for table rows
         // See kolab_folders::folder_class_name()
         if ($table = $args['table']) {
             for ($i=1, $cnt=$table->size(); $i<=$cnt; $i++) {
                 $attrib = $table->get_row_attribs($i);
                 $folder = $attrib['foldername']; // UTF7-IMAP
                 $type   = $folderdata[$folder];
 
                 if (!$type) {
                     $type = 'mail';
                 }
 
                 $class_name = self::folder_class_name($type);
                 $attrib['class'] = trim($attrib['class'] . ' ' . $class_name);
                 $table->set_row_attribs($attrib, $i);
             }
         }
 
         // Add type-based class for list items
         if (is_array($args['list'])) {
             foreach ((array)$args['list'] as $k => $item) {
                 $folder = $item['folder_imap']; // UTF7-IMAP
                 $type   = $folderdata[$folder];
 
                 if (!$type) {
                     $type = 'mail';
                 }
 
                 $class_name = self::folder_class_name($type);
                 $args['list'][$k]['class'] = trim($item['class'] . ' ' . $class_name);
             }
         }
 
         return $args;
     }
 
     /**
      * Handler for folder info/edit form (folder_form hook).
      * Adds folder type selector.
      */
     function folder_form($args)
     {
         if (!$this->metadata_support()) {
             return $args;
         }
         // load translations
         $this->add_texts('localization/', false);
 
         // INBOX folder is of type mail.inbox and this cannot be changed
         if ($args['name'] == 'INBOX') {
             $args['form']['props']['fieldsets']['settings']['content']['foldertype'] = array(
                 'label' => $this->gettext('folderctype'),
                 'value' => sprintf('%s (%s)', $this->gettext('foldertypemail'), $this->gettext('inbox')),
             );
 
             $this->add_expire_input($args['form'], 'INBOX');
 
             return $args;
         }
 
         if ($args['options']['is_root']) {
             return $args;
         }
 
         $mbox = strlen($args['name']) ? $args['name'] : $args['parent_name'];
 
         if (isset($_POST['_ctype'])) {
             $new_ctype   = trim(rcube_utils::get_input_value('_ctype', rcube_utils::INPUT_POST));
             $new_subtype = trim(rcube_utils::get_input_value('_subtype', rcube_utils::INPUT_POST));
         }
 
         // Get type of the folder or the parent
         if (strlen($mbox)) {
             list($ctype, $subtype) = $this->get_folder_type($mbox);
             if (strlen($args['parent_name']) && $subtype == 'default')
                 $subtype = ''; // there can be only one
         }
 
         if (!$ctype) {
             $ctype = 'mail';
         }
 
         $storage = $this->rc->get_storage();
 
         // Don't allow changing type of shared folder, according to ACL
         if (strlen($mbox)) {
             $options = $storage->folder_info($mbox);
             if ($options['namespace'] != 'personal' && !in_array('a', (array)$options['rights'])) {
                 if (in_array($ctype, $this->types)) {
                     $value = $this->gettext('foldertype'.$ctype);
                 }
                 else {
                     $value = $ctype;
                 }
                 if ($subtype) {
                     $value .= ' ('. ($subtype == 'default' ? $this->gettext('default') : $subtype) .')';
                 }
 
                 $args['form']['props']['fieldsets']['settings']['content']['foldertype'] = array(
                     'label' => $this->gettext('folderctype'),
                     'value' => $value,
                 );
 
                 return $args;
             }
         }
 
         // Add javascript script to the client
         $this->include_script('kolab_folders.js');
 
         // build type SELECT fields
-        $type_select = new html_select(array('name' => '_ctype', 'id' => '_ctype',
+        $type_select = new html_select(array('name' => '_ctype', 'id' => '_folderctype',
             'onchange' => "\$('[name=\"_expire\"]').attr('disabled', \$(this).val() != 'mail')"
         ));
         $sub_select  = new html_select(array('name' => '_subtype', 'id' => '_subtype'));
         $sub_select->add('', '');
 
         foreach ($this->types as $type) {
             $type_select->add($this->gettext('foldertype'.$type), $type);
         }
         // add non-supported type
         if (!in_array($ctype, $this->types)) {
             $type_select->add($ctype, $ctype);
         }
 
         $sub_types = array();
         foreach ($this->subtypes as $ftype => $subtypes) {
             $sub_types[$ftype] = array_combine($subtypes, array_map(array($this, 'gettext'), $subtypes));
 
             // fill options for the current folder type
             if ($ftype == $ctype || $ftype == $new_ctype) {
                 $sub_select->add(array_values($sub_types[$ftype]), $subtypes);
             }
         }
 
-        $args['form']['props']['fieldsets']['settings']['content']['foldertype'] = array(
+        $args['form']['props']['fieldsets']['settings']['content']['folderctype'] = array(
             'label' => $this->gettext('folderctype'),
-            'value' => $type_select->show(isset($new_ctype) ? $new_ctype : $ctype)
-                . $sub_select->show(isset($new_subtype) ? $new_subtype : $subtype),
+            'value' => html::div('input-group',
+                $type_select->show(isset($new_ctype) ? $new_ctype : $ctype)
+                . $sub_select->show(isset($new_subtype) ? $new_subtype : $subtype)
+            ),
         );
 
         $this->rc->output->set_env('kolab_folder_subtypes', $sub_types);
         $this->rc->output->set_env('kolab_folder_subtype', isset($new_subtype) ? $new_subtype : $subtype);
 
         $this->add_expire_input($args['form'], $args['name'], $ctype);
 
         return $args;
     }
 
     /**
      * Handler for folder update/create action (folder_update/folder_create hook).
      */
     function folder_save($args)
     {
         // Folder actions from folders list
         if (empty($args['record'])) {
             return $args;
         }
 
         // Folder create/update with form
         $ctype     = trim(rcube_utils::get_input_value('_ctype', rcube_utils::INPUT_POST));
         $subtype   = trim(rcube_utils::get_input_value('_subtype', rcube_utils::INPUT_POST));
         $mbox      = $args['record']['name'];
         $old_mbox  = $args['record']['oldname'];
         $subscribe = $args['record']['subscribe'];
 
         if (empty($ctype)) {
             return $args;
         }
 
         // load translations
         $this->add_texts('localization/', false);
 
         // Skip folder creation/rename in core
         // @TODO: Maybe we should provide folder_create_after and folder_update_after hooks?
         //        Using create_mailbox/rename_mailbox here looks bad
         $args['abort']  = true;
 
         // There can be only one default folder of specified type
         if ($subtype == 'default') {
             $default = $this->get_default_folder($ctype);
 
             if ($default !== null && $old_mbox != $default) {
                 $args['result'] = false;
                 $args['message'] = $this->gettext('defaultfolderexists');
                 return $args;
             }
         }
         // Subtype sanity-checks
         else if ($subtype && (!($subtypes = $this->subtypes[$ctype]) || !in_array($subtype, $subtypes))) {
             $subtype = '';
         }
 
         $ctype .= $subtype ? '.'.$subtype : '';
 
         $storage = $this->rc->get_storage();
 
         // Create folder
         if (!strlen($old_mbox)) {
             // By default don't subscribe to non-mail folders
             if ($subscribe)
                 $subscribe = (bool) preg_match('/^mail/', $ctype);
 
             $result = $storage->create_folder($mbox, $subscribe);
             // Set folder type
             if ($result) {
                 $this->set_folder_type($mbox, $ctype);
             }
         }
         // Rename folder
         else {
             if ($old_mbox != $mbox) {
                 $result = $storage->rename_folder($old_mbox, $mbox);
             }
             else {
                 $result = true;
             }
 
             if ($result) {
                 list($oldtype, $oldsubtype) = $this->get_folder_type($mbox);
                 $oldtype .= $oldsubtype ? '.'.$oldsubtype : '';
 
                 if ($ctype != $oldtype) {
                     $this->set_folder_type($mbox, $ctype);
                 }
             }
         }
 
         // Set messages expiration in days
         if ($result && isset($_POST['_expire'])) {
             $expire = trim(rcube_utils::get_input_value('_expire', rcube_utils::INPUT_POST));
             $expire = intval($expire) && preg_match('/^mail/', $ctype) ? intval($expire) : null;
 
             $storage->set_metadata($mbox, array($this->expire_annotation => $expire));
         }
 
         $args['record']['class']     = self::folder_class_name($ctype);
         $args['record']['subscribe'] = $subscribe;
         $args['result'] = $result;
 
         return $args;
     }
 
     /**
      * Handler for user preferences save (preferences_save hook)
      *
      * @param array $args Hash array with hook parameters
      *
      * @return array Hash array with modified hook parameters
      */
     public function prefs_save($args)
     {
         if ($args['section'] != 'folders') {
             return $args;
         }
 
         $dont_override = (array) $this->rc->config->get('dont_override', array());
 
         // map config option name to kolab folder type annotation
         $opts = array(
             'drafts_mbox' => 'mail.drafts',
             'sent_mbox'   => 'mail.sentitems',
             'junk_mbox'   => 'mail.junkemail',
             'trash_mbox'  => 'mail.wastebasket',
         );
 
         // check if any of special folders has been changed
         foreach ($opts as $opt_name => $type) {
             $new = $args['prefs'][$opt_name];
             $old = $this->rc->config->get($opt_name);
             if (!strlen($new) || $new === $old || in_array($opt_name, $dont_override)) {
                 unset($opts[$opt_name]);
             }
         }
 
         if (empty($opts)) {
             return $args;
         }
 
         $folderdata = kolab_storage::folders_typedata();
 
         if (!is_array($folderdata)) {
              return $args;
         }
 
         foreach ($opts as $opt_name => $type) {
             $foldername = $args['prefs'][$opt_name];
 
             // get all folders of specified type
             $folders = array_intersect($folderdata, array($type));
 
             // folder already annotated with specified type
             if (!empty($folders[$foldername])) {
                 continue;
             }
 
             // set type to the new folder
             $this->set_folder_type($foldername, $type);
 
             // unset old folder(s) type annotation
             list($maintype, $subtype) = explode('.', $type);
             foreach (array_keys($folders) as $folder) {
                 $this->set_folder_type($folder, $maintype);
             }
         }
 
         return $args;
     }
 
     /**
      * Handler for ACL permissions listing (acl_rights_simple hook)
      *
      * This shall combine the write and delete permissions into one item for
      * groupware folders as updating groupware objects is an insert + delete operation.
      *
      * @param array $args Hash array with hook parameters
      *
      * @return array Hash array with modified hook parameters
      */
     public function acl_rights_simple($args)
     {
         if ($args['folder']) {
             list($type,) = $this->get_folder_type($args['folder']);
 
             // we're dealing with a groupware folder here...
             if ($type && $type !== 'mail') {
                 if ($args['rights']['write'] && $args['rights']['delete']) {
                     $write_perms = $args['rights']['write'] . $args['rights']['delete'];
                     $rw_perms    = $write_perms . $args['rights']['read'];
 
                     $args['rights']['write'] = $write_perms;
                     $args['rights']['other'] = preg_replace("/[$rw_perms]/", '', $args['rights']['other']);
 
                     // add localized labels and titles for the altered items
                     $args['labels'] = array(
                         'other'  => $this->rc->gettext('shortacla','acl'),
                     );
                     $args['titles'] = array(
                         'other'  => $this->rc->gettext('longaclother','acl'),
                     );
                 }
             }
         }
 
         return $args;
     }
 
     /**
      * Handler for ACL permissions listing (acl_rights_supported hook)
      *
      * @param array $args Hash array with hook parameters
      *
      * @return array Hash array with modified hook parameters
      */
     public function acl_rights_supported($args)
     {
         if ($args['folder']) {
             list($type,) = $this->get_folder_type($args['folder']);
 
             // we're dealing with a groupware folder here...
             if ($type && $type !== 'mail') {
                 // remove some irrelevant (for groupware objects) rights
                 $args['rights'] = str_split(preg_replace('/[p]/', '', join('', $args['rights'])));
             }
         }
 
         return $args;
     }
 
     /**
      * Checks if IMAP server supports any of METADATA, ANNOTATEMORE, ANNOTATEMORE2
      *
      * @return boolean
      */
     function metadata_support()
     {
         $storage = $this->rc->get_storage();
 
         return $storage->get_capability('METADATA') ||
             $storage->get_capability('ANNOTATEMORE') ||
             $storage->get_capability('ANNOTATEMORE2');
     }
 
     /**
      * Checks if IMAP server supports any of METADATA, ANNOTATEMORE, ANNOTATEMORE2
      *
      * @param string $folder Folder name
      *
      * @return array Folder content-type
      */
     function get_folder_type($folder)
     {
         return explode('.', (string)kolab_storage::folder_type($folder));
     }
 
     /**
      * Sets folder content-type.
      *
      * @param string $folder Folder name
      * @param string $type   Content type
      *
      * @return boolean True on success
      */
     function set_folder_type($folder, $type = 'mail')
     {
         return kolab_storage::set_folder_type($folder, $type);
     }
 
     /**
      * Returns the name of default folder
      *
      * @param string $type Folder type
      *
      * @return string Folder name
      */
     function get_default_folder($type)
     {
         $folderdata = kolab_storage::folders_typedata();
 
         if (!is_array($folderdata)) {
             return null;
         }
 
         // get all folders of specified type
         $folderdata = array_intersect($folderdata, array($type.'.default'));
 
         return key($folderdata);
     }
 
     /**
      * Returns CSS class name for specified folder type
      *
      * @param string $type Folder type
      *
      * @return string Class name
      */
     static function folder_class_name($type)
     {
         list($ctype, $subtype) = explode('.', $type);
 
         $class[] = 'type-' . ($ctype ? $ctype : 'mail');
 
         if ($subtype)
             $class[] = 'subtype-' . $subtype;
 
         return implode(' ', $class);
     }
 
     /**
      * Creates default folders if they doesn't exist
      */
     private function create_default_folders(&$folders, $filter, $folderdata = null, $lsub = false)
     {
         $storage     = $this->rc->get_storage();
         $namespace   = $storage->get_namespace();
         $defaults    = array();
         $prefix      = '';
 
         // Find personal namespace prefix
         if (is_array($namespace['personal']) && count($namespace['personal']) == 1) {
             $prefix = $namespace['personal'][0][0];
         }
 
         $this->load_config();
 
         // get configured defaults
         foreach ($this->types as $type) {
             foreach ((array)$this->subtypes[$type] as $subtype) {
                 $opt_name = 'kolab_folders_' . $type . '_' . $subtype;
                 if ($folder = $this->rc->config->get($opt_name)) {
                     // convert configuration value to UTF7-IMAP charset
                     $folder = rcube_charset::convert($folder, RCUBE_CHARSET, 'UTF7-IMAP');
                     // and namespace prefix if needed
                     if ($prefix && strpos($folder, $prefix) === false && $folder != 'INBOX') {
                         $folder = $prefix . $folder;
                     }
                     $defaults[$type . '.' . $subtype] = $folder;
                 }
             }
         }
 
         if (empty($defaults)) {
             return;
         }
 
         if ($folderdata === null) {
             $folderdata = kolab_storage::folders_typedata();
         }
 
         if (!is_array($folderdata)) {
             return;
         }
 
         // find default folders
         foreach ($defaults as $type => $foldername) {
             // get all folders of specified type
             $_folders = array_intersect($folderdata, array($type));
 
             // default folder found
             if (!empty($_folders)) {
                 continue;
             }
 
             list($type1, $type2) = explode('.', $type);
 
             $activate = in_array($type1, $this->act_types);
             $exists   = false;
             $result   = false;
 
             // check if folder exists
             if (!empty($folderdata[$foldername]) || $foldername == 'INBOX') {
                 $exists = true;
             }
             else if ((!$filter || $filter == $type1) && in_array($foldername, $folders)) {
                 // this assumes also that subscribed folder exists
                 $exists = true;
             }
             else {
                 $exists = $storage->folder_exists($foldername);
             }
 
             // create folder
             if (!$exists) {
                 $exists = $storage->create_folder($foldername);
             }
 
             // set type + subscribe + activate
             if ($exists) {
                 if ($result = kolab_storage::set_folder_type($foldername, $type)) {
                     // check if folder is subscribed
                     if ((!$filter || $filter == $type1) && $lsub && in_array($foldername, $folders)) {
                         // already subscribed
                         $subscribed = true;
                     }
                     else {
                         $subscribed = $storage->subscribe($foldername);
                     }
 
                     // activate folder
                     if ($activate) {
                         kolab_storage::folder_activate($foldername, true);
                     }
                 }
             }
 
             // add new folder to the result
             if ($result && (!$filter || $filter == $type1) && (!$lsub || $subscribed)) {
                 $folders[] = $foldername;
             }
         }
     }
 
     /**
      * Static getter for default folder of the given type
      *
      * @param string $type Folder type
      * @return string Folder name
      */
     public static function default_folder($type)
     {
         return self::$instance->get_default_folder($type);
     }
 
     /**
      * Get /shared/vendor/cmu/cyrus-imapd/expire value
      *
      * @param string $folder IMAP folder name
      *
      * @return int|false The annotation value or False if not supported
      */
     private function get_expire_annotation($folder)
     {
         $storage = $this->rc->get_storage();
 
         if ($storage->get_vendor() != 'cyrus') {
             return false;
         }
 
         if (!strlen($folder)) {
             return 0;
         }
 
         $value = $storage->get_metadata($folder, $this->expire_annotation);
 
         if (is_array($value)) {
             return $value[$folder] ? intval($value[$folder][$this->expire_annotation]) : 0;
         }
 
         return false;
     }
 
     /**
      * Add expiration time input to the form if supported
      */
     private function add_expire_input(&$form, $folder, $type = null)
     {
         if (($expire = $this->get_expire_annotation($folder)) !== false) {
             $post    = trim(rcube_utils::get_input_value('_expire', rcube_utils::INPUT_POST));
             $is_mail = empty($type) || preg_match('/^mail/i', $type);
-            $input   = new html_inputfield(array('name' => '_expire', 'size' => 3, 'disabled' => !$is_mail));
+            $label   = $this->gettext('xdays');
+            $input   = new html_inputfield(array(
+                    'id'       => '_kolabexpire',
+                    'name'     => '_expire',
+                    'size'     => 3,
+                    'disabled' => !$is_mail
+            ));
 
             if ($post && $is_mail) {
                 $expire = (int) $post;
             }
 
+            if (strpos($label, '$') === 0) {
+                $label = str_replace('$x', '', $label);
+                $html  = $input->show($expire ?: '') . html::span('input-group-addon', rcube::Q($label));
+            }
+            else {
+                $label = str_replace('$x', '', $label);
+                $html  = html::span('input-group-addon', rcube::Q($label)) . $input->show($expire ?: '');
+            }
+
             $form['props']['fieldsets']['settings']['content']['kolabexpire'] = array(
                 'label' => $this->gettext('folderexpire'),
-                'value' => str_replace('$x', $input->show($expire ?: ''), $this->gettext('xdays')),
+                'value' => html::div('input-group', $html),
             );
         }
     }
 }