Custom confirmation page on per-newsletter basis

I’d like to create more than one confirmation page for my newsletters and I’d like to change their content on a per newsletter basis.

Practically I offer more than one ebook to download and I’d like them sent to my subscribers once they’ve subscribed.

But when they subscribe, I’d like to send them to a confirmation page that recall the name of the ebook, so, if they would like to download the “ebook #1”, the confirmation page says something like “Great, your subscription is confirmed and your ebook “Ebook #1″ will be sent to you in a metter of minutes”.

Currently, I cannot do this as I can set the confirmation page only globally, and not on a per newsletter basis. I’m I missing something or the plugin doesn’t support custom confirmation pages on a per newsletter basis?