I mail a lot of things to friends and have a habit of putting them in zip lock bags with my name and address cards in them in case of damage. Better safe than sorry. I don't think about the weather..I will now. My postman left a package on the ground by my mailbox rather than come to the porch as usual and it was wet and dirty. Luckily it was dry inside. I picked it up before it had time to get worse. Lesson learned. Thanks ladies