[GlickWick]

This is a great case of actually putting in the steps to prove something many people implicitly or observationally assume is true. You only have a few seconds (at best) to grab someone's attention, so it stands to reason that a short email will be more focused and likely to grab their attention.

I'd be curious to see how this works in an internal corporate setting. I tend to notice that 1+ page email blasts about some technical or process change at my employer (who I do not speak for) tends to get ignored. If you ask people if they know about the process change, they generally have no idea what I'm talking about. A quick email that says "Hey we've migrated the schmission engine from forkilate to quantilate, please stop using forkilate by August 7th" tends to get a lot of attention!