Over the last 25 years, I have seen a lot of direct mail mistakes. The worst mistakes are the ones that cost you the most money, so learning what to avoid can really help.
Top 3 Mistakes:
1. Missing or Unclear Call to Action
The purpose of direct mail is to get recipients to respond. When you are missing a call to action or it is unclear to recipients what you want them to do, you will not get the response you were planning on. If you get a response at all it would be surprising. Be sure to have a specific call to action that is easy to follow.