Well . . . 85.7% (6/7). On Sundays, it's Amazon's: https://www.bloomberg.com/news/articles/2015-07-30/it-s-amazon-s-world-the-usps-just-delivers-in-it https://w

Well . . . 85.7% (6/7). On Sundays, it's Amazon's: https://www.bloomberg.com/news/articles/2015-07-30/it-s-amazon-s-world-the-usps-just-delivers-in-it https://www.bloomberg.com/news/articles/2015-07-30/it-s-amaz...