Some vendors sell postage accounting as part of a comprehensive 'job shop' program that also does services billing and work ticket preparation (see Software Marketing Associates, Inc. and Streamline Solutions). Mailers who are not in the market for a complete lettershop business management program that can "do it all" would benefit from a postage accounting program that focuses on the problems of managing postage (see Window Book, Inc. and JEHM Technologies Inc.). Inaccurate postage accounts can cost your business thousands of dollars every year. A modest investment in the right software can improve your ability to control these funds and provide an impressive return on your investment.