I get really angry whenever I spend the time and effort to completely clean out my work email inbox - and then somebody has the nerve to email me! I just cleaned this inbox out! And now there's someone's email just polluting its pristine white window. Seriously! These work emails are how it gets cluttered up in the first place.
Unless it's about free donuts in the break room, I don't want my immaculate inbox messed up again. Coworkers should know better.