A client of mine wanted to automate her invoicing. As part of that project I used the USPS API to get the postal rate. First of all, their documentation is jus

A client of mine wanted to automate her invoicing. As part of that project I used the USPS API to get the postal rate. First of all, their documentation is just plain wrong. It will not work if you follow their documentation. After a frustrating few hours I googled it and found a site that explained everything that was wrong with it. http://www.marksanborn.net/php/calculating-usps-shipping-rates-with-php/ http://www.marksanborn.net/php/calculating-usps-shipping-rat... Secondly, my client complains that the USPS should have someone she can contact that gives her all the info she needs to use their services. But instead what she has found is some info from one person, conflicting info from another, and no one who can explain everything. The USPS does a terrific job of delivering mail at a very reasonable rate, but they need to fix the problems outlined above if they want to compete.