This is an accepted solution.
We’re happy to share that you can now generate a SCAN Form for USPS shipping labels purchased with Shopify Shipping using the free Shipping Manifests app. For those who are not aware, when you generate a SCAN Form for a batch of shipments, USPS scans one barcode on the form to accept all of those shipments instead of scanning each package individually.
Thanks again for your feedback
I cannot begin to express just how EXCITED I am to use this for the first time. Can't wait to finally have a scan sheet when we do our big drop off at our local post office and not have them hate us. It was killing us knowing we were contributing to adding extra work to an amazing team that was already short staffed and overwhelmed.