@exachillus : Yup, totally right, fixing this right now. Is there any other metadata fields than the title that should be modified when producing an epub for a single article ? Maybe Author could be filled with the domain name.
We also plan to get more metadata from articles, see
https://github.com/wallabag/wallabag/issues/629 for some informations.
@all : I've started to work on the SendToKindle functionality. See
https://github.com/wallabag/wallabag/issues/770 At first we only may propose mobi export, I guess this would be a good start.