I'm trying to find out how to create a link that will send the current page/article on my site to a users Kindle device. I haven't been able to find much about it, but I know it can be done because I see it here: <http://openlibrary.org/works/OL258709W/King_Henry_VI> and Instapaper offers this functionality, see image. Does anyone know how to do this, or even where to start?

![send to kindle](https://i.stack.imgur.com/lyMIv.png)

I've seen other posts asking this question, but they were from awhile ago and at the time it wasn't possible so there were no answers, now it's possible.