diff --git a/NIST_Data_Leakage_Case/py_version/pycode/email/list_emails.ipynb b/NIST_Data_Leakage_Case/py_version/pycode/email/list_emails.ipynb
new file mode 100644
index 0000000..21bc513
--- /dev/null
+++ b/NIST_Data_Leakage_Case/py_version/pycode/email/list_emails.ipynb
@@ -0,0 +1,120 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 68,
+   "source": [
+    "import pypff\r\n",
+    "\r\n",
+    "pst_file = pypff.file()\r\n",
+    "pst_file.open('informant_nist_gov.ost')\r\n",
+    "root_folder = pst_file.get_root_folder()\r\n",
+    "\r\n",
+    "for folder in root_folder.sub_folders:\r\n",
+    "    if folder.name == \"Root - Mailbox\":\r\n",
+    "        print(f\"Folder Name: {folder.name}\")\r\n",
+    "        print(f\"Number of Subfolders: {folder.number_of_sub_folders}\")\r\n",
+    "        \r\n",
+    "        for subfolder in folder.sub_folders:\r\n",
+    "            if subfolder.name == \"IPM_SUBTREE\":\r\n",
+    "                print(f\"Folder Name: {subfolder.name}\")\r\n",
+    "                print(f\"Number of Subfolders: {subfolder.number_of_sub_folders}\")\r\n",
+    "\r\n",
+    "                for subsubfolder in subfolder.sub_folders:\r\n",
+    "                    if subsubfolder.name == \"Inbox\":\r\n",
+    "                        print(f\"Folder Name: {subsubfolder.name}\")\r\n",
+    "                        print(f\"Number of Subfolders: {subsubfolder.number_of_sub_folders}\")\r\n",
+    "                    \r\n",
+    "                        for message in subsubfolder.sub_messages:\r\n",
+    "                            print(\"=====================================\")\r\n",
+    "                            print(f\"Message Subject: {message.subject}\")\r\n",
+    "                            print(f\"Sender: {message.sender_name}\")\r\n",
+    "                            print(f\"Body: {message.plain_text_body}\")\r\n",
+    "                            print(f\"Number of Attachments: {message.number_of_attachments}\")\r\n",
+    "                            print(f\"Delivery Time: {message.delivery_time}\")\r\n",
+    "                            print(f\"Client Submit Time: {message.client_submit_time}\")\r\n"
+   ],
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "Folder Name: Root - Mailbox\n",
+      "Number of Subfolders: 10\n",
+      "Folder Name: IPM_SUBTREE\n",
+      "Number of Subfolders: 17\n",
+      "Folder Name: Inbox\n",
+      "Number of Subfolders: 0\n",
+      "=====================================\n",
+      "Message Subject: Hello, Iaman\n",
+      "Sender: spy\n",
+      "Body: None\n",
+      "Number of Attachments: 0\n",
+      "Delivery Time: 2015-03-23 17:29:29.181071\n",
+      "Client Submit Time: 2015-03-23 17:29:27\n",
+      "=====================================\n",
+      "Message Subject: Good job, buddy.\n",
+      "Sender: spy\n",
+      "Body: None\n",
+      "Number of Attachments: 0\n",
+      "Delivery Time: 2015-03-23 19:15:00.258496\n",
+      "Client Submit Time: 2015-03-23 19:14:58\n",
+      "=====================================\n",
+      "Message Subject: RE: Good job, buddy.\n",
+      "Sender: spy\n",
+      "Body: None\n",
+      "Number of Attachments: 0\n",
+      "Delivery Time: 2015-03-23 19:20:41.921166\n",
+      "Client Submit Time: 2015-03-23 19:20:41\n",
+      "=====================================\n",
+      "Message Subject: Important request\n",
+      "Sender: spy\n",
+      "Body: None\n",
+      "Number of Attachments: 0\n",
+      "Delivery Time: 2015-03-23 19:26:23.855622\n",
+      "Client Submit Time: 2015-03-23 19:26:22\n",
+      "=====================================\n",
+      "Message Subject: Last request\n",
+      "Sender: spy\n",
+      "Body: None\n",
+      "Number of Attachments: 0\n",
+      "Delivery Time: 2015-03-24 13:25:59.137876\n",
+      "Client Submit Time: 2015-03-24 13:25:57\n"
+     ]
+    }
+   ],
+   "metadata": {}
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "source": [],
+   "outputs": [],
+   "metadata": {}
+  }
+ ],
+ "metadata": {
+  "orig_nbformat": 4,
+  "language_info": {
+   "name": "python",
+   "version": "3.11.4",
+   "mimetype": "text/x-python",
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "pygments_lexer": "ipython3",
+   "nbconvert_exporter": "python",
+   "file_extension": ".py"
+  },
+  "kernelspec": {
+   "name": "python3",
+   "display_name": "Python 3.11.4 64-bit"
+  },
+  "interpreter": {
+   "hash": "a06e30aee820ff8fe24fb428cece021c5cdfc4bd84062afc0eba853e87fef366"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}
\ No newline at end of file