I've been receiving an obnoxiously increasing number of them -- checking in, checking my bag, might cancel my flight, might cancel my flight, actually canceled my flight, actually canceled my flight, boarding, arriving, connecting....
I did notice last night/this morning that for some reason instead of showing up as the "United Airlines" I have 26266 stored as its just showing up as 26266 (CO.COM) -- but I attributed that to an Android update and have spent more time rebuilding the itinerary that blew up overnight.