Unsent messages count

Anyone have an idea how I can accomplish the following? Unless there's a better solution, my main question is to identify that there are unsent messages in the drafts folder.

I have a terrible habit of starting, or even finishing, writing an email but get distracted and don't hit the send button.

Two days later, while closing my ungodly amount of windows, I'll see it and send it two days late.

I bet there's already a way to do this, as opposed to a feature request.

Thoughts?

Do you have your "Mailbox List" showing at the left of the main window? Does that not show a message count next to Drafts? Or do you want some kind of indication without showing the "Mailbox List" (and if so -- how/when/where)?