I find that if I procrastinate long enough, things get so outdated I no longer need to deal with them. In fact, I used to let my inbox get a foot deep, then when I finally went through it, most of it was no longer relevant and went in the recycle bin. Now I save time by putting stuff directly in the recycle bin, and skip the inbox. If I really need something later I could find it in the recycle bin, because I seldom get around to emptying it.