I didn't get a email "confirmation" either. I went through the process 3 times, each time either having problems and not receiving any feedback (a confirmation) at all that the application and supplement went through. During and after that time I contacted USAIRWAYS through various help-desks and phone calls (not fun). Eventually one of the e-mails I did receive was from their IT department telling me they were sorry about the problems and that my application and supplement "went through". What's that mean? I don't know. That's all the effort I'll put into applying to USAIRWAYS.