For this study, 3,000 school administrators were divided into three groups, and received either: 1) an envelope with a sales letter, sales collateral and postage-paid business reply card, 2) an envelope with similar contents plus a promotional product, or 3) all of the contents listed above, delivered in a box with a diecut slot, instead of an envelope.

Dimensional Direct Mail Response Rates

Sales Literature Alone 1.9%

Sales Literature + Promotional Product 2.1%

Sales Literature + Promotional Product Dimensional 3.3%


Those who received a promotional product in a dimensional package responded at a rate that was 57% higher than those who received the same promotional product in an envelope.

Response rates for the dimensional package recipients were 75% higher than for the group who received only a sales letter.

Dimensional packaging made a significant impact on response rates.