diff --git a/docs/mail-merge/generate_invoices.py b/docs/mail-merge/generate_invoices.py
new file mode 100644
index 00000000..d962fae2
--- /dev/null
+++ b/docs/mail-merge/generate_invoices.py
@@ -0,0 +1,96 @@
+import os
+import pandas as pd
+from google.oauth2 import service_account
+from googleapiclient.discovery import build
+
+# Set up Google Sheets and Google Docs API credentials
+SERVICE_ACCOUNT_FILE = process.env.GCP_CLIENT_SECRET
+SCOPES = [
+    'https://www.googleapis.com/auth/spreadsheets.readonly',
+    'https://www.googleapis.com/auth/documents',
+    'https://www.googleapis.com/auth/drive.file'
+]
+creds = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE, scopes=SCOPES)
+
+# Configuration
+SHEET_ID = '1lZtro8sLdpx8IozYQUbe-dJFhkacxw8W3RvZf45furo'
+PACKAGE_META_TAB = 'Package_Meta'
+PACKAGE_CONTENTS_TAB = 'Package_Contents'
+TEMPLATE_DOC_ID = '19VGSJoRY2n1BmyQcqUBuI0aVEJd_1Uh2wHMDB-0FXi8'
+OUTPUT_FOLDER_ID = '1VWF48TKNHBtAfIt1SF9ks1uzmXj02IQj'
+
+def fetch_google_sheet_data(sheet_id, range_name):
+    """Fetch data from Google Sheets."""
+    service = build('sheets', 'v4', credentials=creds)
+    sheet = service.spreadsheets()
+    result = sheet.values().get(spreadsheetId=sheet_id, range=range_name).execute()
+    values = result.get('values', [])
+    return pd.DataFrame(values[1:], columns=values[0]) if values else pd.DataFrame()
+
+def get_package_data():
+    """Fetch data from both tabs and merge them based on Package_Number."""
+    # Fetch data from Google Sheets tabs
+    package_meta = fetch_google_sheet_data(SHEET_ID, PACKAGE_META_TAB)
+    package_contents = fetch_google_sheet_data(SHEET_ID, PACKAGE_CONTENTS_TAB)
+
+    # Convert Package_Number to string for consistent merging
+    package_meta['Package_Number'] = package_meta['Package_Number'].astype(str)
+    package_contents['Package_Number'] = package_contents['Package_Number'].astype(str)
+
+    # Merge data based on Package_Number
+    merged_data = pd.merge(package_meta, package_contents, on='Package_Number', how='left')
+    return merged_data
+
+def copy_template(template_id, output_name, folder_id):
+    """Create a copy of the Google Docs template for each invoice."""
+    drive_service = build('drive', 'v3', credentials=creds)
+    copied_file = drive_service.files().copy(
+        fileId=template_id,
+        body={'name': output_name, 'parents': [folder_id]}
+    ).execute()
+    return copied_file['id']
+
+def replace_placeholders(document_id, replacements):
+    """Replace placeholders in a Google Docs document."""
+    docs_service = build('docs', 'v1', credentials=creds)
+    requests = [
+        {'replaceAllText': {
+            'containsText': {'text': '{{' + key + '}}', 'matchCase': True},
+            'replaceText': value
+        }} for key, value in replacements.items()
+    ]
+    docs_service.documents().batchUpdate(documentId=document_id, body={'requests': requests}).execute()
+
+def generate_invoices():
+    """Main function to generate invoices based on merged data."""
+    merged_data = get_package_data()
+
+    # Group by Package_Number to create individual invoices
+    for package_number, group in merged_data.groupby('Package_Number'):
+        package_info = group.iloc[0]  # Get customer info for this package
+
+        # Format items list with details from Package_Contents
+        items = "\n".join([
+            f"Card: {row['Card']}, Set: {row['Set']}, Cond.: {row['Cond.']}, Finish: {row['Finish']}, "
+            f"Lang.: {row['Lang.']}, Amount: {row['Amount']}, Status: {row['Status']}, Date: {row['Date']}"
+            for _, row in group.iterrows()
+        ])
+
+        # Prepare replacements dictionary
+        replacements = {
+            'Customer_Name': package_info['Customer_Name'],
+            'Customer_Email': package_info['Customer_Email'],
+            'Package_Number': package_number,
+            'Order_Date': package_info['Order_Date'],
+            'Shipping_Address': package_info['Shipping_Address'],
+            'Items': items,
+            'Total_Amount': str(group['Amount'].astype(float).sum())
+        }
+
+        # Copy the template and replace placeholders
+        document_id = copy_template(TEMPLATE_DOC_ID, f"Invoice_{package_number}", OUTPUT_FOLDER_ID)
+        replace_placeholders(document_id, replacements)
+        print(f"Invoice generated for Package {package_number}.")
+
+if __name__ == '__main__':
+    generate_invoices()