They email me, and it comes from all over the business, and it is an international business.
I do not spend too much time, I was making the point that keeping up with emails is now quite normal.
I also spend a little time checking e-mails while on holiday. Occasionally I deal with really critical issues, but my main reason is to keep on top of the number. It means I avoid the need to deal with thousands of e-mails on my return, most of which aren't important. The problem with dealing with such a number on your return to work is that it is far too easy to miss the important ones amongst the dross.
The other advantage is that I come back to work knowing I'm not going to walk into a crisis - pre-email I used to dread heading back into work after being away for a couple of weeks as I never knew whether some serious shit might have hit the fan in my absence.