"They've (airlines) eliminated account access to most third-party mileage-tracking sites, including AwardWallet, TripIt Pro, UsingMiles, MileWise and Superfly, even if the airlines' loyalty program members granted permission....However, Superfly recently introduced a work-around, which it calls Superbox.With Superbox, Superfly members give the site permission to scan their Gmail inboxes for airline, hotel and credit card account updates. Superfly then automatically aggregates them in a dashboard."
AwardWallet does this with UA I believe.