And if you’ve ever e-mailed a crucial file that never arrived at its destination, you’ll want a way to transfer files and make sure your recipient received them.įile Transfer Protocol (FTP) is tailor-made for quickly moving large digital files between a remote computer acting as an FTP server and an FTP client that lets you access and upload those files. If you’ve ever watched an e-mail application choke on a 4MB attachment, you know that sometimes you need an alternative to directly sending or receiving files.