A Quick Guide to MileagePlus X (MPX) (and why I still use em)
Introduction MileagePlus X (MPX) is an app that allows you to earn extra United Airlines miles for shopping with one of their listed partners. The app』s been out for a while but it doesn』t get much discussion. No surprises there, since it doesn』t look like United cares too much about this app either. The UI for iOS devices are still…
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