Stamps.com is USPS-licensed shipping software that allows users to import orders from eBay, Amazon, PayPal and other marketplaces and shopping cart software.
Features include: customized packing slips, online tracking of shipments, customized email notifications and return shipping labels.
Stamps.com can manage international mail classes, and all forms (including customs) can be printed from the software.
From $15.99 per month. See the "pricing" link above for more information.
- Sears.com Marketplace
- Yahoo Stores