I was a bit overwhelmed at the first start but quickly figured out how to play relatively . The concept is nice and full filled the theme. The music is calming what one may need for the stressing tasks :) What i would have liked would have been that the stamped mails always end up in the top right corner or the mails from employees stay beneath them. That would make things a little less hectic.
But all in all a great game :)
Good Job!