The only kind I have mailed I made in a disposable pan and decorated it right in the pan. Then I wrapped it with cardboard on the top so nothing would bother the decorations. Next I wrapped it in bubble wrap and then into the shipping box. It arrived at my son's college dorm in great shape. It was Feb. And we are in Colorado, so it didn't get too warm.
__________________ No matter where I serve my guests, it seems they like my kitchen best!