I appreciate a good hack, but just can't get past the idea that this is a solution in search of a problem. 2 Reasons I would never consider using this: 1. I don't want anyone to have any idea "how busy I am". Maybe I'm old fashioned, but the size of my inbox, like many other things, is no one's business but mine. 2. This effectively makes the sender the gatekeeper for deciding what's important. I want to be my own ga…
I had exactly the same reaction: good hack, where's the problem?
The solution to the problem of too much email already exists, and that solution is ... email. Email is asynchronous, and you get to decide when and what to do with it.