Calibre can create .mobi files from your Filtered HTML. (http://calibre-ebook.com/)
I use it to process all the books I sell on Amazon, but you don't need to upload it to Amazon to do that. You can use it to create your Kindle file (complete with cover art), then e-mail that Kindle book directly to your (or anyone else's Kindle), easy-as-pie.
I use it to process all the books I sell on Amazon, but you don't need to upload it to Amazon to do that. You can use it to create your Kindle file (complete with cover art), then e-mail that Kindle book directly to your (or anyone else's Kindle), easy-as-pie.