Quote:
Originally Posted by odamizu
One drawback: If you email the epub with a .png or .txt, etc. extension, the title will be the filename and the author will be your email address; whereas, if you convert the epub through KindleGen (or Calibre) first then email the resulting .mobi, the Kindle will pick up the title and author from the OPF. However, if you use the Send-to-Kindle app, the app allows you to input the title and author before sending.
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This suggests that when Amazon gets this "png" file it is recognised as a zipped collection of HTML and css. It is ignoring the metadata in the OPF (title, author, cover image tag). It is not really converting epub. There would be ways to test that I guess. Is everything in the right order (though I suppose that's the ncx)? Are all the chapters in the "Goto" list? Does it get the cover? How about if the cover is not named something like "cover.jpg"?
Anyway, to convert ePub I use the Sigil Kindlegen plugin that makes an azw and copy it to the Kindle via USB. No email, no Amazon. Everything works.