Interesting that this is just now being announced. The spouse orders clothes from a place that use to ship via FedEx SmartPost that was slower than molasses and never delivered on the expected date. We noticed that they switched to this DHL eCommerce early in the year and have been very happy with the speed. FedEx SmartPost was 10 to 14 days and this DHL eCommerce is 7 days. On the DHL eCommerce, you can track the order on either DHL or USPS with the same tracking number.
We posted about it here on SAS earlier in the year (pretty sure when it was announced that USPS and UPS were joining back up).