How to Set Up Push Gmail on a Windows Mobile Phone

Overnight, a snow storm has covered Eagle County, Colorado, thick in white. The overabundance of snow makes the track unfair and unsafe. The world cup ski race has to be cancelled: unfortunate, but not uncommon.
What made this morning special was a reporter explaining the situation: "It was a real wizard!"
Chances are I misheard; maybe it was a real wizard. In any event: Windows Mobile was once a wizard, code named "Merlin". Today, Gmail messages can arrive overnight or during the day at any moment instantly -- as if by magic:
›› Take Gmail with you on your Windows Mobile device — and have it push new messages the moment they arrive with ActiveSync.