1. Log in to your Razorhost client area.
2. After login, Goto menu and click on the services > My Services.
3. Find your shared hosting service that comes along with cPanel. Click on the Active button. You can use the search box of the client area to find your service.
4. It will take you to the product page. On the left side, you will find an option to log in to cPanel. It will redirect you to the cPanel. You can log in to your webmail from here as well.