If this doesn't sound like much to you, chances are you've already got a system for taming an unruly in-box. I've had more than 10,000 messages sitting in my in-box at times -- so, for me, Nostalgy is a big reason why I've been able to adhere to one of my 2010 New Year's resolutions: keeping my in-box uncluttered.

In some cases, automated filters take care of this for me -- for example, I can send messages containing coupons or other shopping deals to a folder that autopurges after a few weeks. But many messages arrive first in my in-box, where they need to be moved manually to folders for short- or long-term saving.

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