diff --git a/plugins/kolab_addressbook/kolab_addressbook.js b/plugins/kolab_addressbook/kolab_addressbook.js
index c8370304..b9402501 100644
--- a/plugins/kolab_addressbook/kolab_addressbook.js
+++ b/plugins/kolab_addressbook/kolab_addressbook.js
@@ -131,6 +131,19 @@ if (window.rcmail) {
     rcmail.addEventListener('listupdate', function() {
         rcmail.set_book_actions();
     });
+
+    // wait until rcmail.contact_list is ready and subscribe to 'select' events
+    setTimeout(function() {
+        rcmail.contact_list && rcmail.contact_list.addEventListener('select', function(list) {
+            var selected = list.selection.length,
+                source = rcmail.env.source ? rcmail.env.address_sources[rcmail.env.source] : null;
+
+            if (selected && source.kolab) {
+                console.log('select', source.rights)
+                rcmail.enable_command('delete', 'move', selected && source.rights.indexOf('t') >= 0);
+            }
+        });
+    }, 100);
 }
 
 // (De-)activates address book management commands
@@ -139,10 +152,12 @@ rcube_webmail.prototype.set_book_actions = function()
     var source = !this.env.group ? this.env.source : null,
         sources = this.env.address_sources;
 
+    var props = source && sources[source] && sources[source].kolab ? sources[source] : { removable: false, rights: '' }
     this.enable_command('book-create', true);
-    this.enable_command('book-edit', 'book-delete', source && sources[source] && sources[source].kolab && sources[source].editable);
-    this.enable_command('book-remove', source && sources[source] && sources[source].kolab && sources[source].removable);
-    this.enable_command('book-showurl', source && sources[source] && sources[source].carddavurl);
+    this.enable_command('book-edit',   props.rights.indexOf('a') >= 0);
+    this.enable_command('book-delete', props.rights.indexOf('x') >= 0 || props.rights.indexOf('a') >= 0);
+    this.enable_command('book-remove', props.removable);
+    this.enable_command('book-showurl', !!props.carddavurl);
 };
 
 rcube_webmail.prototype.book_create = function()
@@ -359,26 +374,36 @@ function kolab_addressbook_contextmenu()
         }, {
             'activate': function(p) {
                 var source = !rcmail.env.group ? rcmail.env.source : null,
-                    sources = rcmail.env.address_sources;
+                    sources = rcmail.env.address_sources,
+                    props = source && sources[source] && sources[source].kolab ?
+                        sources[source] : { readonly: true, removable: false, rights: '' };
 
                 if (p.command == 'book-create') {
                     return true;
                 }
 
-                if (p.command == 'book-edit' || p.command == 'book-delete' || p.command == 'group-create') {
-                    return !!(source && sources[source] && sources[source].kolab && sources[source].editable);
+                if (p.command == 'book-edit') {
+                    return props.rights.indexOf('a') >= 0;
+                }
+
+                if (p.command == 'book-delete') {
+                    return props.rights.indexOf('a') >= 0 || props.rights.indexOf('x') >= 0;
+                }
+
+                if (p.command == 'group-create') {
+                    return !props.readonly;
                 }
 
                 if (p.command == 'book-remove') {
-                    return !!(source && sources[source] && sources[source].kolab && sources[source].removable);
+                    return props.removable;
                 }
 
                 if (p.command == 'book-showurl') {
-                    return !!(source && sources[source] && sources[source].carddavurl);
+                    return !!(props.carddavurl);
                 }
 
                 if (p.command == 'group-rename' || p.command == 'group-delete') {
-                    return !!(rcmail.env.group && sources[rcmail.env.source] && sources[rcmail.env.source].editable);
+                    return !!(rcmail.env.group && sources[rcmail.env.source] && !sources[rcmail.env.source].readonly);
                 }
 
                 return false;
diff --git a/plugins/kolab_addressbook/kolab_addressbook.php b/plugins/kolab_addressbook/kolab_addressbook.php
index 26c2bca3..a8046b3e 100644
--- a/plugins/kolab_addressbook/kolab_addressbook.php
+++ b/plugins/kolab_addressbook/kolab_addressbook.php
@@ -113,6 +113,11 @@ class kolab_addressbook extends rcube_plugin
         foreach ($this->_list_sources() as $abook_id => $abook) {
             // register this address source
             $sources[$abook_id] = $this->abook_prop($abook_id, $abook);
+
+            // flag folders with 'i' right as writeable
+            if ($this->rc->action == 'add' && strpos($abook->rights, 'i') !== false) {
+                $sources[$abook_id]['readonly'] = false;
+            }
         }
 
         // Add personal address sources to the list
@@ -145,7 +150,7 @@ class kolab_addressbook extends rcube_plugin
                 'listname' => $abook->get_foldername(),
                 'group'    => $abook instanceof kolab_storage_folder_user ? 'user' : $abook->get_namespace(),
                 'readonly' => true,
-                'editable' => false,
+                'rights'   => 'l',
                 'kolab'    => true,
                 'virtual'  => true,
             );
@@ -156,7 +161,7 @@ class kolab_addressbook extends rcube_plugin
                 'name'     => $abook->get_name(),
                 'listname' => $abook->get_foldername(),
                 'readonly' => $abook->readonly,
-                'editable' => $abook->editable,
+                'rights'   => $abook->rights,
                 'groups'   => $abook->groups,
                 'undelete' => $abook->undelete && $this->rc->config->get('undo_timeout'),
                 'realname' => rcube_charset::convert($abook->get_realname(), 'UTF7-IMAP'), // IMAP folder name
@@ -387,6 +392,14 @@ class kolab_addressbook extends rcube_plugin
 
             if ($folder && $folder->type == 'contact') {
                 $p['instance'] = new rcube_kolab_contacts($folder->name);
+
+                // flag source as writeable if 'i' right is given
+                if ($p['writeable'] && $this->rc->action == 'save' && strpos($p['instance']->rights, 'i') !== false) {
+                    $p['instance']->readonly = false;
+                }
+                else if ($this->rc->action == 'delete' && strpos($p['instance']->rights, 't') !== false) {
+                    $p['instance']->readonly = false;
+                }
             }
         }
 
diff --git a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
index c618b106..9f117e42 100644
--- a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
+++ b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
@@ -29,8 +29,8 @@
 class rcube_kolab_contacts extends rcube_addressbook
 {
     public $primary_key = 'ID';
+    public $rights   = 'lrs';
     public $readonly = true;
-    public $editable = false;
     public $undelete = true;
     public $groups = true;
     public $coltypes = array(
@@ -122,19 +122,18 @@ class rcube_kolab_contacts extends rcube_addressbook
         $this->storagefolder = kolab_storage::get_folder($this->imap_folder);
         $this->ready = $this->storagefolder && !PEAR::isError($this->storagefolder);
 
-        // Set readonly and editable flags according to folder permissions
+        // Set readonly and rights flags according to folder permissions
         if ($this->ready) {
             if ($this->storagefolder->get_owner() == $_SESSION['username']) {
-                $this->editable = true;
                 $this->readonly = false;
+                $this->rights = 'lrswikxtea';
             }
             else {
                 $rights = $this->storagefolder->get_myrights();
-                if (!PEAR::isError($rights)) {
-                    if (strpos($rights, 'i') !== false)
+                if ($rights && !PEAR::isError($rights)) {
+                    $this->rights = $rights;
+                    if (strpos($rights, 'i') !== false && strpos($rights, 't') !== false)
                         $this->readonly = false;
-                    if (strpos($rights, 'a') !== false || strpos($rights, 'x') !== false)
-                        $this->editable = true;
                 }
             }
         }