Update app.py

app.py

@@ -2,12 +2,16 @@
 """
 Gradio Email Client App - Web interface for email fetching and management
 Supports IMAP and POP3 protocols with secure authentication
+
+Requirements (requirements.txt):
+gradio
+pandas
 """
 
 import gradio as gr
-import imaplib
-import poplib
-import email
+import imaplib  # Built-in Python module
+import poplib   # Built-in Python module
+import email    # Built-in Python module
 from email.header import decode_header
 from email.utils import parsedate_to_datetime
 import json
@@ -16,6 +20,7 @@ from datetime import datetime
 import pandas as pd
 from typing import List, Dict, Tuple, Optional
 import re
+import ssl
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -33,8 +38,10 @@ class EmailClient:
     def connect_imap(self, server: str, port: int, email_addr: str, password: str, use_ssl: bool = True):
         """Connect to IMAP server"""
         try:
+            # Create SSL context for better security
             if use_ssl:
-                self.imap_conn = imaplib.IMAP4_SSL(server, port)
+                context = ssl.create_default_context()
+                self.imap_conn = imaplib.IMAP4_SSL(server, port, ssl_context=context)
             else:
                 self.imap_conn = imaplib.IMAP4(server, port)
                 
@@ -43,6 +50,9 @@ class EmailClient:
             self.connected_email = email_addr
             logger.info(f"Connected to IMAP server: {server}")
             return True, f"✅ Connected to IMAP server: {server}"
+        except imaplib.IMAP4.error as e:
+            logger.error(f"IMAP authentication failed: {e}")
+            return False, f"❌ IMAP authentication failed. Check your credentials."
         except Exception as e:
             logger.error(f"IMAP connection failed: {e}")
             return False, f"❌ IMAP connection failed: {str(e)}"
@@ -51,7 +61,8 @@ class EmailClient:
         """Connect to POP3 server"""
         try:
             if use_ssl:
-                self.pop_conn = poplib.POP3_SSL(server, port)
+                context = ssl.create_default_context()
+                self.pop_conn = poplib.POP3_SSL(server, port, context=context)
             else:
                 self.pop_conn = poplib.POP3(server, port)
                 
@@ -61,6 +72,9 @@ class EmailClient:
             self.connected_email = email_addr
             logger.info(f"Connected to POP3 server: {server}")
             return True, f"✅ Connected to POP3 server: {server}"
+        except poplib.error_proto as e:
+            logger.error(f"POP3 authentication failed: {e}")
+            return False, f"❌ POP3 authentication failed. Check your credentials."
         except Exception as e:
             logger.error(f"POP3 connection failed: {e}")
             return False, f"❌ POP3 connection failed: {str(e)}"
@@ -651,9 +665,15 @@ with gr.Blocks(title="Email Client", theme=gr.themes.Soft()) as app:
 
 # Launch the app
 if __name__ == "__main__":
+    # Check if running in a deployment environment
+    import os
+    port = int(os.environ.get("PORT", 7860))
+    
     app.launch(
         server_name="0.0.0.0",
-        server_port=7860,
-        share=True,
-        show_error=True
+        server_port=port,
+        share=False,
+        show_error=True,
+        show_tips=False,
+        quiet=False
     )