To set up USPS shipping on Shopify, follow these steps: 1. Log in to your Shopify admin panel and go to “Settings” and then “Shipping.” 2. Under the “Shipping zones” section, click on the zone where you want to offer USPS shipping. 3. Click on “Add shipping rate” and then select “Carrier calculated rates.” 4.… Continue reading how to set up usps shipping on shopify?