(Leopard) mail-synchronizing Notes widget exists ?

Does anyone know whether a notes-widget exists that synchronizes with mail and is as simple as possible ?

I wouldn't even need read-functionality, I just want it to sit there so that whenever I need it I can instantly type in my thoughts, hit save and therefore send it to my mail-notes.

I'm thinking about just building it myself, but I don't want to waste any efforts if it already exists. Especially since I'm not even a 100% sure whether notes are part of Leopard's systemwide calendar store. So thanks for your help guys !