diff --git a/UI/Templates/PreferencesUI/UIxPreferences.wox b/UI/Templates/PreferencesUI/UIxPreferences.wox
index dc20fc9f6..174734382 100644
--- a/UI/Templates/PreferencesUI/UIxPreferences.wox
+++ b/UI/Templates/PreferencesUI/UIxPreferences.wox
@@ -16,6 +16,7 @@
   <script type="text/javascript">
     var mailCustomFromEnabled = <var:string value="mailCustomFromEnabled" const:escapeHTML="NO"/>;
     var timeZonesList = <var:string value="timeZonesList" const:escapeHTML="NO"/>;
+    var defaultEmailAddresses = '<var:string value="defaultEmailAddresses" const:escapeHTML="NO"/>';
   </script>
 
   <script type="text/ng-template" id="preferences.html">
@@ -732,16 +733,13 @@
                 </md-input-container>
 
                 <md-input-container>
-                  <!-- <script>
-                       var defaultEmailAddresses = <var:string value="defaultEmailAddresses" const:escapeHTML="NO"/>;
-                       </script> -->
                   <label><var:string label:value="Email addresses (separated by commas)"/></label>
                   <textarea const:name="autoReplyEmailAddresses"
                             const:id="autoReplyEmailAddresses"
                             ng-model="app.preferences.defaults.Vacation.autoReplyEmailAddresses"/>
                 </md-input-container>
                 <div layout="row" layout-align="end center">
-                  <md-button>
+                  <md-button ng-click="app.addDefaultEmailAddresses()">
                     <var:string label:value="Add default email addresses" type="button"/>
                   </md-button>
                 </div>
diff --git a/UI/WebServerResources/js/Preferences/PreferencesController.js b/UI/WebServerResources/js/Preferences/PreferencesController.js
index 9a043aa53..56cbb7af3 100644
--- a/UI/WebServerResources/js/Preferences/PreferencesController.js
+++ b/UI/WebServerResources/js/Preferences/PreferencesController.js
@@ -27,6 +27,7 @@
     vm.addMailFilter = addMailFilter;
     vm.editMailFilter = editMailFilter;
     vm.removeMailFilter = removeMailFilter;
+    vm.addDefaultEmailAddresses = addDefaultEmailAddresses;
     vm.userFilter = User.$filter;
     vm.save = save;
     vm.canChangePassword = canChangePassword;
@@ -161,6 +162,16 @@
     function removeMailFilter(index) {
       vm.preferences.defaults.SOGoSieveFilters.splice(index, 1);
     }
+
+    function addDefaultEmailAddresses() {
+      var v = [];
+
+      if (angular.isDefined(vm.preferences.defaults.Vacation.autoReplyEmailAddresses)) {
+        v = vm.preferences.defaults.Vacation.autoReplyEmailAddresses.split(',');
+      }
+
+      vm.preferences.defaults.Vacation.autoReplyEmailAddresses = (_.union(window.defaultEmailAddresses.split(','), v)).join(',');
+    }
     
     function save() {
       vm.preferences.$save();