“USPS Launches Express Mail Flat Rate Boxes for Overnight Delivery” in eCommerce Bytes


By Ina Steiner

Costing $18.30 (retail) for a flat rate envelope, Express Mail is useful when overnight delivery of important papers or documents is required. Now the USPS is introducing Express Mail flat rate boxes that could help sellers when overnight delivery is the only option.


Five dollar stamp sitting above an opened box

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