No postage shipping labels not available ExtensionWorks December 29, 2018 01:40 Follow As of the 23 February 2018, the USPS shipping label API is not available. https://www.usps.com/business/web-tools-apis/letter-to-customers-usps-web-tools-label-api-elimination-of-no-postage.pdf letter-to-customers-usps-web-tools-label-api-elimination-of-no-postage.pdf 600 KB Download Comments 0 comments Please sign in to leave a comment.
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