Welcome. hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems.
PLEASE HELP!!!!!!!!! If you have a modem with a built in router, you can use it as a wireless (wifi) router. Wifi doesn't cost money as a service. You just need the devices that are compatible with it. Wifi is just a different way of connecting stuff to the internet.
For the most part the two are used interchangeably, however, technically there is a difference and for the most part consumers only use WiFi Routers. A WiFi router is a WiFi access point with a built in router. The router allows you to connect multiple computers to the network using a single IP address, typically provided by your ISP.