PR-Inside--Stamps.com®, a provider of USPS® postage online : and shipping software : to approximately 400,000 customers, today announced that it recently introduced PC Postage Version 8.9 software which includes new features to help e-commerce sellers and high volume shippers save money. The new Version 8.9 software adds to an already powerful suite of Stamps.com shipping software that led to a 111% growth in Stamps.com's total high volume shipping postage printed for the recently announced fiscal second quarter. Version 8.9 is available for free at www.stamps.com/download/ .