This is another shipping module for Zencart. I have been working on the UPS XML module for awhile now. I have ported over the more advanced packing algorithm from the UPS module, to allow packing support in the USPS shipping module. This module allows Zencart to calculate shipping for multiple boxes for a freight quote. The default behavior for Zencart is to place all items in one box with a total weight to send for quote. With this updated USPS shipping module, items will be packed into boxes you enter, or you may set items to always be packaged separately. The module then returns the aggregate shipping cost for your packages. This should provide much more accurate shipping quotes.You can download the module from bitbucket.org. In the upper right hand corner highlight over “get source”, and click on zip to download the files. Found a bug? Or what to update the code, please fork my project, or send me your revisions.