Here's the trick I use that we learned from Monica Foschi when she shipped to us back a couple years ago.
I still thank her for teaching me this ... Thanks Monica!
We package ours similar to outback with one major exception, we do not use newspaper for filler.
We Use pillow fiber filling for insulation in the box, not paper, this allows the heat to go throughout the box preventing the cold spots that newspaper does cause.
We have shipped many packages to the opposite coast to 35 degree temps and had snakes show up perfectly warm everytime![]()