In our school, the students in grades 8-12 all have their own laptops. They carry them around with them and use them as appropriate in every class. This means that when they have a question, they can ask it via email at any moment during the day.
I love that they can do this and will reply as soon as I am able. Sometimes I am teaching, and can't answer right away. Other times I respond in seconds because I am online working anyway.
What strikes me is that although they think to send the email, they rarely think to check to see if I answered. Every day a student will stand in my doorway and casually ask, did you get my email?
My response is always the same, "Yes. Did you get my response?"
I have never been more connected, more accessible to my students... and still we are disconnected.