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USPS returned all 50 of my first class mail parcels?? I bought the shipping labels through Shopify. Please help : r/USPS
![USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail](https://www.postscanmail.com/wp-content/uploads/2022/09/USPS-Shipping-Rates-by-Weight-Chart.jpg "USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail")
USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail
Mail & Shipping Services | USPS
Mail & Shipping Services | USPS
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Priority Mail Flat Rate® Padded Envelope | USPS.com
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