A:Answer Thank you for your question. You don't necessarily have to use the HP Smart app for the ENVY Inspire 7255e printer, but it is highly recommended for the easiest setup and full functionality. However, if you prefer not to use the HP Smart app, you can still set up and use the printer by installing the full feature software and drivers directly from the HP Support website. This method allows you to use the printer and scanner via USB or Wi-Fi without the HP Smart app.