KCC (a.k.a. Kindle Comic Converter) is a comic and manga converter for ebook readers.
despite its name, KCC is actually a comic/manga to EPUB converter that every e-reader owner can happily use.

M2em let's you automatically download Mangas via RSS Feed that updates at a configurable interval (and comics in the future?), convert them into eMangas and send them off via Email (Target being the Email to Kindle function of Amazon)