Methods and systems are provided for automating an accounting process for business reply mail (BRM). The process may enable a mailer to create a BRM mailpiece marked with a unique code, which is provided to a responder. The responder may send the BRM mailpiece to the mailer without adding postage to the BRM mailpiece. A service provider may read the bar code to determine the mailer, deliver the BRM mailpiece to the mailer, and then bill the mailer for the postage.