Why Is It Effective? Intriguing envelope teaser is a great way to draw attention to your direct mail campaign. This month we show the top envelope teasers being used to increase response rates. Who Can Benefit? Anyone using envelope packages for direct mail should test teaser copy. The more interest created on the carrier envelope, the more likely it is to get opened which can result in an improved response rate for your campaign without adding a lot of cost. ​ Give us a call