Suck it, Russia: when it comes to mail delivery, no one anywhere covers more area than Canada Post.
Our national post office has been around for a couple of centuries, and in that time has learned a thing or two about shuttling mail around the Frozen North as quickly and efficiently as possible.
It was a rural Alberta mail carrier, for example, that installed one of the first car warmers in his winter-ized Model T delivery truck—so he wouldn't, y'know, freeze to death on his route (the tech itself was patented by a Canadian just prior to 1900).
They're still innovating today, with electric truck testing around urban centres (the fuel bill can otherwise get quite high, what with the post office running the second-largest government fleet in Canada).
But that's just scratching the surface. Check out a more detailed history of land-based mail delivery in Canada over on Autofocus.