They only fake support epub - when you use "send to Kindle" to send an epub, it gets quietly converted by Amazon to either mobi or azw3 (I don't know exactly which of those two but it seems like azw3 is more likely). I assume they use kindlegen to do the conversion, even though Calibre does better azw3 conversion. If you're using SE ebooks on a Kindle, you should simply download our premade azw3 files as I guarantee they'll be better than whatever Amazon does to an epub sent over email.

We accept translations into English, but the translations need to have been published before 1927 for them to be in the US public domain. See our collections policy: https://standardebooks.org/contribute/collections-policy

The Communist Manifest is already in our catalog: https://standardebooks.org/ebooks/karl-marx_friedrich-engels...