i have prime and all my 2 day shipments come via USPS.Not my packages... if anything all my amazon packages are ups or dhl first and foremost small packages are usps but they often have a habit of fukking up...
yeah their subscribe and save shipments come via their delivery service for me. and same day is through a company called dynamex.Doesn't amazon have their own service that delivers packages though?
Maybe JC needs to do the same thing...