This is a  file‐based task manager with user registration, login, and per‐user to-do lists. Users sign up (and optionally receive a welcome email via PyWhatKit), their credentials are stored in users.txt, and each user’s tasks live in a separate tasks_<email>.txt file. Regular users can add, view, and delete their own tasks, while an inherited Admin class can list all users and see everyone’s tasks. The command-line menus guide registration, login, and task management in a straightforward loop.