Originally Posted by publicjj
But what do you mean by "sideload via USB" ? I don't think USB is needed here.
The email service that Amazon runs also does file conversion for you if you don't wish to do it yourself using software such as Calibre.
You email the file to them and they'll automaticially deliver the file if you turn on your Kindle and enable wireless. They also send you an email reply containing a URL that lets you download and transfer the file across to your Kindle manually using USB.