Recently I have been trying to make sure that important information for our taxes is forwarded to our new address. You don't think about any of that until you need something that didn't show up.
Today my mom gave me a catalog for teaching supplies. It had my maiden name and my parents new address. As far as I know I never ordered anything from that company. How could I stay on that mailing list as I lived in several states and my parents moved once? I was on that mailing list 20 years ago.
I bet that some important mail will not follow us even though this junk mail did!