For large-scale "post" preparation, the USPS Postal Explorer outlines specific bundling rules:
: Briefly explain what is inside the .zip file (e.g., PDF patterns, instruction guides, or source files). Stephjc.zip
: Use clear or brown 2-inch wide packaging tape to reinforce all seams. Do not use string or twine, as they can get caught in sorting machines [2]. For large-scale "post" preparation, the USPS Postal Explorer