clone: copy over the enableMailbox flag

src/apps.js

@@ -749,6 +749,7 @@ function install(data, auditSource, callback) {
         overwriteDns = 'overwriteDns' in data ? data.overwriteDns : false,
         skipDnsSetup = 'skipDnsSetup' in data ? data.skipDnsSetup : false,
         appStoreId = data.appStoreId,
+        enableMailbox = 'enabledMailbox' in data ? data.enableMailbox : true,
         manifest = data.manifest;
 
     let error = manifestFormat.parse(manifest);
@@ -817,6 +818,7 @@ function install(data, auditSource, callback) {
             label,
             tags,
             icon,
+            enableMailbox,
             runState: exports.RSTATE_RUNNING,
             installationState: exports.ISTATE_PENDING_INSTALL
         };
@@ -1696,7 +1698,8 @@ function clone(app, data, user, auditSource, callback) {
                     label: app.label ? `${app.label}-clone` : '',
                     tags: app.tags,
                     enableAutomaticUpdate: app.enableAutomaticUpdate,
-                    icon: icons.icon
+                    icon: icons.icon,
+                    enableMailbox: app.enableMailbox
                 };
 
                 appdb.add(newAppId, appStoreId, manifest, location, domain, translatePortBindings(portBindings, manifest), data, function (error) {