Can GTD help with too much email volume?

In my earlier blog post about getting your email inbox down to zero, GTD'er Gil asked the question, "So, what do you suggest when the problem seems to be the sheer quantity, not just mail management practices?"

There are two things I would look at:  Speed + Input

One angle to consider is to get really good and faster at processing.  Speed will be required when you're getting tons of volume every day if you hope to get through it all without it consuming your entire day.

I think it's also hel