Data-Pac is well known as a leading developer of hardware and software solutions for the mailing industry. We understand the postal business and are a trusted developer of innovative products that improve your mailing center. In fact, Data-Pac is the first company in more than 25 years to have been given United States Postal Service authorization to manufacture and market postage meters in the United States. The AMERICA2 Postage Security Device (PSD) is the first postage meter to offer internet-based postage funds replenishment.