As a note, there is a new feature as explained on the news sticker, "saved messages" currently available as the little scribe image at the bottom left of each message.
A good use of the feature is to click it for every message you want to deal with later, usually requests or letters you want to respond to later, the most common being requests for gold that you want to hand out at tax day.
Thus if you save those requests, then come tax day you can simple click "all saved" at the top or "all saved messages" in the messages page to access these requests, and after you fulfill each you can click on the icon again to remove the message from the "saved" category.
Have fun!
P.S. If you think this belongs in the development forum, feel free to move it there. I was a little torn on where it should go as I would also like to know how others are using this.