I gather they are getting a machine to do that here in D/FW soon. I wonder if they'll have to put a little seal on: "This package has been sanitized for your protection" Be careful what you send for Christmas! Not everything should be radiated. I'm gonna hunt down some vellum (translucent) envelopes for my Christmas cards this year. They're fun as well as useful.
I'm sorry, I know it's serious, but I can't help making light of things because it makes it easier for me to take.
I used to do mail art. If you don't know, people send incredible items through the mail, ranging from actual art and decorated envelopes to the absurd, like a running shoe with the address on the sole and the return address on the laces. It was a lot of fun, but I'm not happy about receiving a fat envelope from overseas from someone who got my name off a mailing list any more. I miss it, but I won't put my child at risk (no matter how stupid I might be if it was just me).