Direct-Mail Primer: How to Get Your Envelope Opened

Take it a step further though in personalization
Computerized printing technology makes it possible to make addresses and letters look handwritten when they are not. You now can have your own handwriting printed out via laser or ink-jet in various colors.

So to take your mail to the next level in getting it opened, try dressing up the carrier. People judge you by your outer appearance before they get to know what’s on the inside. Why whouldn’t they judge your mail the same way? Try making it look friendly and highly personal, like you’re sending one letter to a really good friend.