Originally Posted by daesdaemar
I have not done it yet, but I suppose that if I had a document that I could not convert, then I might email it to the "non-free" address and see if Amazon could do the appropriate conversion (for a fee) and send it to me.
The conversion is the same and free for both the regular @kindle.com address and @free.kindle.com address. It is the actual 3G delivery that costs money. The conversion service, USB sideloading and WiFi delivery are all free and don't cost anything.