Dedicated Hosting through GoDaddy includes a single, free dedicated IP address to use for things like: custom applications, staging sites, email, and other administrative tasks.   If you run any custom software on your server, then you’d probably need a dedicated IP address. Some types of server software require a dedicated IP in order for it to work. A dedicated IP address allows you to have control panel management so you can separate your sites and control panel onto two different IP addresses for security purposes and to isolate services.   A dedicated IP address also ensures your emails get delivered to the right people versus a domain-based email that runs the potential risk of delivering to the wrong people or not delivering at all. If have a shared an IP address with your email and have other users on that same IP address, then you run a big risk of getting that IP blocked or blacklisted.