I don't think it's possible to do it in that way although I could be mistaken as I've not tried it myself. The iPad is pretty limited when it comes to that sort of functionality. There are apps in the App store that allow you to save web pages. One of the more popular ones is Instapaper. Whether they allow you to send them via email I am not sure. Is it not possible for you to send a link to that web page and let the recipient open it up ?