added more secure way to logout from IMAP server

src/imap.rs

@@ -106,7 +106,10 @@ pub async fn download_email_from_imap() -> anyhow::Result<Vec<(u32, PathBuf)>>{
     }
     
     // Logout from the IMAP session
-    session.logout().await.expect("Unable to logout");
+    match session.logout().await{
+        Ok(_) => {}
+        Err(_) => {}
+    };
 
     Ok(stored_paths)
 }