How to use browser-based FTP (also known as WebFTP or Web FTP) in Internet Explorer:

Input one of the following URLs into your Address Bar, replacing the credentials
listed with your account information:

ftp://username:password@serverIPaddress/

- or -

ftp://username:password@domain.com/

*NOTE*: This will not work with additionally created FTP accounts or addon domain
FTP accounts, as the browser will not accept two @ symbols in the URL.
You must use an FTP program for these accounts.

You might want to look also at Web Disk in your domain control panel.
How to use Web Disk in cPanel