Xerox Centreware page
It's a webpage built into the printer itself, if you know the IP address it uses, you put it in the address bar of a web browser (Internet Explorer, Safari, Firefox) and it will load the page.
From that page, you can program the printer to do scan ( to email or to PC)
But you cannot just scan to a desktop PC, you need to install and configure FTP, or create an SMB share.
I have no idea on the SMTP2Go thing though, I have never used them.