MaxPresort OS is a Presort Accuracy and Validation Evaluation™ (PAVE) Gold-certified* software solution. It can help you take advantage of the tremendous postage discounts offered by the USPS for presorting your mail to the finest level. MaxPresort OS supports of all levels of palletization, allowing mailers additional in-house labor savings, and is Manifest Analysis and Certification (MAC) Batch-certified for all USPS-tested presorts and reports.