I would like to build or contribute to (or even buy assuming there is one) a Windows screensaver that shows the number of unread messages using POP3 and/or IMAP.

On ideal world, what I would really like is a screensaver that sits on top of your regular screensaver (inside its configuration you could pick what would be the background screensaver) and the notification could then be placed (like a watermark) on top of it.

Is there anything close to that? If not, what would be the closest matches, considering the fancy and free preference, even though I would pay for a really good one.

Any suggestions?

Thanks!