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 8fedc3cf636..33411dc2717 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
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+// [START mailjet_imports]
 package com.example.managedvms.mailjet;
 
 import com.mailjet.client.MailjetClient;
@@ -21,6 +22,7 @@
 import com.mailjet.client.MailjetResponse;
 import com.mailjet.client.errors.MailjetException;
 import com.mailjet.client.resource.Email;
+// [END mailjet_imports]
 
 import org.json.JSONArray;
 import org.json.JSONObject;
@@ -33,6 +35,7 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+// [START app]
 @SuppressWarnings("serial")
 @WebServlet(name = "mailjet", value = "/send/email")
 public class MailjetServlet extends HttpServlet {
@@ -67,3 +70,4 @@ public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOEx
     }
   }
 }
+// [END app]