What is usps expects item for mailing ssk?

Unfortunately, as an AI language model, I do not have access to real-time data about individual mail items and their current status with USPS. However, USPS offers tracking options for items that are mailed in order to provide customers with up-to-date information about their delivery status. Customers can track the progress of their package on the USPS website or through their mobile app using the package's tracking number. Additionally, USPS offers a variety of shipping options, including priority mail, express mail, and media mail, which have different delivery times and pricing.