The thing with letterbox drops, is that the principles that apply online, apply offline as well. Many of the same principles apply with the letterbox drops, apply with Facebook advertising and your online landing pages as well.
They just have a different medium.
With that said, it helps when you research what your competitors are doing! This can be difficult as some of them aren’t in your area. So, I thought it would be interesting to see who is doing it right and who is doing it wrong. So, let’s talk about the principles and start rating them!