You’ve got these tubes (irony) that fill with water, more and more depending on how many emails are coming at you. When you want to receive those emails, you loosen the valve a little bit, and bam, you get some of those emails. You can loosen it a little bit and let one or two through, or loosen it all the way and you’ll get them all.
Völlig nutzlose, aber trotzdem sehr schöne Idee, wie ich finde. Ihr wisst, wann ich Geburtstag habe.