[shalym]

Originally Posted by kovidgoyal

Amazon wrejects new MOBIs you have to stick to old. And remember that conversion settings are used from previous conversions in preference: https://manual.calibre-ebook.com/con...for-conversion

...or you can go into your output options and change the MOBI file type to "both", which will give you the best of both worlds. You can email the file to Amazon, and you will get the newer (but not the newest) filetype that can handle custom fonts and most of the enhanced typesetting.

Shari