I don’t think they would do that. I once sent a Polaroid photo to a maximum security prison in Canada and they returned it. They even paid for the postage with a polite, handwritten note explaining the rules! Of course, that was Canada and they are always polite it seems heheh. They won’t throw out your photos. If he can’t pay for them to be returned, I’m guessing they will hold onto them until he can or hopefully there is no limit if he has not mentioned one prior to this.

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"Thats it then, they will go on double, secret, probation..."