The only moderately interesting thing I do with email (other than, er, email), is use my drafts folder as a place to save notes so that I can access them from the cloud.

I open a new draft email and set the subject as "Board meeting 30th December 2012". Then I jot down quick notes when I need to in bullet points.

I do the same when I'm interviewing someone (after letting them know that I'm listening but that it's important that I take notes about some of the technical areas we ask about). When I look inside my drafts folder I see a nice list of events that I took notes at.

It also works great when you wake up in the night with a new idea or blog post which you want to jot down. I can head save the draft, then pick it up on my phone on the way in to work.