diff --git a/appengine/mailjet/README.md b/appengine/mailjet/README.md
index 0e452df388b..0a9bddaaac7 100644
--- a/appengine/mailjet/README.md
+++ b/appengine/mailjet/README.md
@@ -1,5 +1,6 @@
 # Mailjet sample for Google App Engine
-This sample demonstrates how to use [Mailjet](https://www.mailjet.com/) on Google App Engine.
+This sample demonstrates how to use [Mailjet](https://www.mailjet.com/) on Google Managed VMs to
+send emails from a verified sender you own.
 
 ## Setup
 1. Before using, ensure the address you plan to send from has been verified in Mailjet.
diff --git a/appengine/mailjet/src/main/java/com/example/appengine/mailjet/MailjetServlet.java b/appengine/mailjet/src/main/java/com/example/appengine/mailjet/MailjetServlet.java
index abc5b7d24d8..e5528dd540f 100644
--- a/appengine/mailjet/src/main/java/com/example/appengine/mailjet/MailjetServlet.java
+++ b/appengine/mailjet/src/main/java/com/example/appengine/mailjet/MailjetServlet.java
@@ -1,7 +1,20 @@
-package com.example.appengine.mailjet;
+/**
+ * Copyright 2016 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
-import org.json.JSONArray;
-import org.json.JSONObject;
+package com.example.appengine.mailjet;
 
 import com.mailjet.client.MailjetClient;
 import com.mailjet.client.MailjetRequest;
@@ -9,6 +22,9 @@
 import com.mailjet.client.errors.MailjetException;
 import com.mailjet.client.resource.Email;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+
 import java.io.IOException;
 
 import javax.servlet.ServletException;
@@ -36,8 +52,7 @@ public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOEx
             "Dear passenger, welcome to Mailjet! May the delivery force be with you!")
         .property(Email.HTMLPART,
             "<h3>Dear passenger, welcome to Mailjet!</h3><br/>May the delivery force be with you!")
-        .property(Email.RECIPIENTS,
-            new JSONArray().put(new JSONObject().put("Email", recipient)));
+        .property(Email.RECIPIENTS, new JSONArray().put(new JSONObject().put("Email", recipient)));
 
     try {
       // trigger the API call
diff --git a/appengine/mailjet/src/main/webapp/WEB-INF/appengine-web.xml b/appengine/mailjet/src/main/webapp/WEB-INF/appengine-web.xml
index b8606139829..5e127cc369f 100644
--- a/appengine/mailjet/src/main/webapp/WEB-INF/appengine-web.xml
+++ b/appengine/mailjet/src/main/webapp/WEB-INF/appengine-web.xml
@@ -1,4 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!-- [START_EXCLUDE] -->
+<!--
+  Copyright 2015 Google Inc. All Rights Reserved.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+        http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- [END_EXCLUDE] -->
 <appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
   <application>YOUR-PROJECT-ID</application>
   <version>YOUR-VERSION-ID</version>
diff --git a/managed_vms/datastore/src/main/appengine/app.yaml b/managed_vms/datastore/src/main/appengine/app.yaml
index 2a659160df5..b45dd027208 100644
--- a/managed_vms/datastore/src/main/appengine/app.yaml
+++ b/managed_vms/datastore/src/main/appengine/app.yaml
@@ -1,3 +1,18 @@
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 runtime: java
 vm: true
 
diff --git a/managed_vms/mailjet/README.md b/managed_vms/mailjet/README.md
index e20c29e3534..37289ddc7fb 100644
--- a/managed_vms/mailjet/README.md
+++ b/managed_vms/mailjet/README.md
@@ -1,5 +1,6 @@
 # Mailjet sample for Google Managed VMs
-This sample demonstrates how to use [Mailjet](https://www.mailjet.com/) on Google Managed VMs.
+This sample demonstrates how to use [Mailjet](https://www.mailjet.com/) on Google Managed VMs to
+send emails from a verified sender you own.
 
 ## Setup
 1. Before using, ensure the address you plan to send from has been verified in Mailjet.
diff --git a/managed_vms/mailjet/src/main/java/com/example/managedvms/mailjet/MailjetServlet.java b/managed_vms/mailjet/src/main/java/com/example/managedvms/mailjet/MailjetServlet.java
index db212079e40..8fedc3cf636 100644
--- a/managed_vms/mailjet/src/main/java/com/example/managedvms/mailjet/MailjetServlet.java
+++ b/managed_vms/mailjet/src/main/java/com/example/managedvms/mailjet/MailjetServlet.java
@@ -1,7 +1,20 @@
-package com.example.managedvms.mailjet;
+/**
+ * Copyright 2016 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
-import org.json.JSONArray;
-import org.json.JSONObject;
+package com.example.managedvms.mailjet;
 
 import com.mailjet.client.MailjetClient;
 import com.mailjet.client.MailjetRequest;
@@ -9,6 +22,9 @@
 import com.mailjet.client.errors.MailjetException;
 import com.mailjet.client.resource.Email;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+
 import java.io.IOException;
 
 import javax.servlet.ServletException;
@@ -38,8 +54,7 @@ public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOEx
             "Dear passenger, welcome to Mailjet! May the delivery force be with you!")
         .property(Email.HTMLPART,
             "<h3>Dear passenger, welcome to Mailjet!</h3><br/>May the delivery force be with you!")
-        .property(Email.RECIPIENTS,
-            new JSONArray().put(new JSONObject().put("Email", recipient)));
+        .property(Email.RECIPIENTS, new JSONArray().put(new JSONObject().put("Email", recipient)));
 
     try {
       // trigger the API call