What Is UPS SurePost? Scott T. August 14, 2017 17:51 Updated UPS SurePost is our most affordable shipping method, and delivery is made within 8 business days after your order has shipped. UPS SurePost provides the combined, reliable convenience of UPS and USPS delivery. Your package is shipped via UPS to your local post office for final delivery by the USPS. For a complete list of shipping methods, click here.