I don't know how far is your mail box but I use coarse sand on my sidewalks and it does a good job. You are right to avoid falling at any cost.
Clint, people around here do not know how to drive in snow either.. It's a military town with ton's of brand new drivers every year. Also people from all over the US. I do pretty good, I had a lot of practice when my brother lived in Ohio, don't miss that drive!