USPS is the only Mobile Friendly Mailing/Shipping Website

I'm not exactly sure what Fedex and/or UPS is waiting for but I'm pretty tired of not able to track my package easily over my smartphone browser when I visit their website on my iPhone.  On the other hand, the United States Post Office actually has a mobile enabled website allowing me to track my package on the go.  Lets see if I can make this any easier for Fedex or UPS, your tracking number is probably one of the most emailed information in the world; more and more people are accessing their emails from their mobile device; it might make sense to enable your website to allow easier access on a mobile device.