Signing in with your Amazon account improves the experience for Kindle and comiXology customers by making Kindle-purchased comics, graphic novel and manga readable on comiXology with our cinematic Guided View experience. Many future features will depend on using your Amazon account, as well.
This is the first step toward using only Amazon accounts to sign in, which will allow us to use even more Amazon resources to the benefit of comiXology customers. At some point in the future, the only way to sign in to comiXology will be with your Amazon account.
Please note that after merging, only Kindle-purchased comics will move to comiXology, your comiXology purchases will not be available in your Kindle library.
You can view books that come over from Kindle Comics in a new Smart List, "From Kindle."