Great real-world anecdote, it's really refreshing to see busy people (I'm assuming Harj is a pretty busy person) understanding the implications of email overload and trying to deal with it.

Not everyone needs to completely remove email from their phones, but doing simple things like turning off push notifications and trying to push one's self to only check at certain intervals has been shown by research (and substantiated by experiences like this) to have huge upsides to productivity, lower stress levels, and creativity.

I'm learning a huge amount in this arena, it's a fascinating topic. If anyone wants to see a very cursory summary of what I've assembled so far, check out a small deck at http://www.slideshare.net/jlyman/email-overload-13506201