Downloads Download the latest version of the Stamps.com software. Also find here graphic plugins, printer drivers and more. USPS Quick guide to USPS mail classes, special services and more. Newsletters Find current and past issues of our Stay Posted™ customer newsletter. Shipping Solutions All the tools you need to ship packages quickly and easily. Prevent Printing Problems Common mistakes to avoid when you print postage. Track/Confirm Check the delivery status of your package online. International Mail Learn how to send international mail using Stamps.com.