diff --git a/src/js/controller/mail-list.js b/src/js/controller/mail-list.js
index 0783ac6..dc543c5 100644
--- a/src/js/controller/mail-list.js
+++ b/src/js/controller/mail-list.js
@@ -34,7 +34,7 @@ define(function(require) {
             markAsRead(email);
         };
 
-        $scope.synchronize = function() {
+        $scope.$parent.synchronize = $scope.synchronize = function() {
             updateStatus('Syncing ...');
             // sync from imap to local db
             syncImapFolder({
diff --git a/src/js/controller/navigation.js b/src/js/controller/navigation.js
index c73de73..e9346e1 100644
--- a/src/js/controller/navigation.js
+++ b/src/js/controller/navigation.js
@@ -152,6 +152,11 @@ define(function(require) {
                     // r -> reply
                     e.preventDefault();
                     return scope.$$childTail.write(scope.$$childTail.selected);
+
+                } else if (e.keyCode === 83 && scope.$$childTail && scope.$$childTail.synchronize) {
+                    // s -> sync folder
+                    e.preventDefault();
+                    return scope.$$childTail.synchronize();
                 }
             });
         };