Maybe some small business people can help me out here. I created a Kickstarter project that got funded and now I need to ship out hundreds of packages. We are using USPS flat rate because it's the cheapest. From what I've gathered, the only way to create shipping labels is to go one by one inputting them into the USPS site and have them print them out by batches of 10. I can import a spreadsheet of the shipment information, but I still would need to select each contact, and go through their website to create the batches. Has anyone had experience with this? I've contacted USPS and that's all they gave me. Any help would be great. Thanks MR.