NetUSB is a powerful, fast, and easy-to-use email experimental tool.If you have one or more large capacity mailboxes,for example Gmail,Yahoo mailbox, which includes storage space of a 1000 megabytes, you have had plenty of storage space but not a lot to fill it up with. With NetUSB you can easily upload and download files in your mailbox. NetUSB allowing you to use this mailbox as a storage medium.