It allows me to run various test scenarios against many different USPS rules which helps predict what will be encountered when submitting data into their systems via my online portal or directly through our internal processes at work! This tool has been very helpful in predicting how they are going react so that I can adjust accordingly before sending out an invoice/submission etc..
There really isn't anything bad about this product as it does exactly like you need them too do i believe!! If anyone needs assistance running tests using postal regulations please give maxpresortal os some consideration. !