I usually download ebooks from Anna’s Archive and transfer it to my Kindle through the service. But 1/10 times it fails, with no apparent reason. The particular ebook in question is https://annas-archive.org/md5/e310a253a9d85992129cc2b8dd351556. What’s the way out?
That’s pretty funny, because I’ve been loading epubs on my Kindle for awhile now, both via cable if I’m at home, and over email if I am not. Amazon recommends epubs over mobi, in fact, and threw a fit when I emailed a mobi.