Methods and systems are provided that reduce feeding and weighing errors in a manually fed mailing machine thereby allowing a very fast throughput to be achieved while a user is taking mail pieces off of a scale and feeding them into the mailing machine. Weights or postage amounts for additional subsequent mail pieces are accepted before the processing of a preceding mail piece has been completed. A queue is maintained for information that has been provided by an attached scale such that the mailing machine can correctly associate each weight or postage amount with the appropriate mail piece when it is fed into the mailing machine. When processing of a previous mail piece has been completed, the information from the next location in the queue is obtained and utilized to generate an indicium for the next mail piece fed into the mailing machine.