MOBI Files
The MOBI format was deprecated by Amazon in late 2023 and is no longer supported. It is recommended that readers use Send to Kindle on their Kindle devices.
BookFunnel will continue to generate a legacy MOBI file for direct-download to Kindle devices but will drop support in a future update
Amazon ASIN
You have the option of providing your Amazon ASIN in your book’s detail page, but this is not a requirement. You are welcome to leave this field blank if you don’t have an ASIN for your book.