Re: you have support for Samsung Gear 2 now
Yes, thanks to Samsung's Gear app being able to work with Aqua's Android Wear notifications.
Re: Aquamail on the Samsung Gear App Store
This is the thing you need, the official Samsung Gear app which enables the watch to work (and you most likely have it installed already):
https://play.google.com/store/apps/details?id=com.samsung.android.app.watchmanagerRe: notifications turned on for the S2 watch with Aquamail
Since last night's update it should be similar to "native" Wear devices -- individual per-message notifications, each with its own action buttons (mark read, delete, etc).
Re: would love a built in app so I can read all my email
Sorry not going to happen.
This would be a big project, only for a fairly limited circle of users -- while I'm still quite busy adding features which appeal to (hopefully) more users, smart watch fans or not.