DHL eCommerce and DHL Express are distinct companies. The same parent organization: Deutsche Post DHL Group, owns both companies.
Both companies deliver their own set of assistances. DHL Express provides international services at most; DHL Global Mail provides international services and domestic services.
You can set up your account on ShippingEasy to make use of a DHL Express account. Besides, you can use DHL eCommerce by configuring your account.
Learn more: How to Get Free Shipping Supplies from USPS, UPS, FedEx, and DHL