- Apr 21, 2009
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Does anyone know how mail is treated once it crosses border to canada or vice versa from canada to the usa. Lets say you shipped a item via usps priority post once it gets to canada which service does this compare to regular mail or xpress mail? Or vice versa when i ship a item from canada lets say xpressmail how does this compare once it enters the usa. I havent really been able to find any information on how this system works.