EnvyPak® receives updated USPS automation letter rate approval – ALR Clear EnvyPaks approved for closure with Wafer Seals Contact: Jim Geers, Director of Sales EnvyPakPhone: 937.645.4600Email: jgeers@envypak.com Marysville, Ohio, May 17, 2022 – Big news for direct mail advertisers and the printers and mail houses that provide direct mail and marketing services. Univenture’s EnvyPak envelopes received wafer seal approval for automated letter rates. Advertisers love EnvyPak’s higher ROI and nearly .