The method of managing the delivery of an order from at least one supplier to a respective delivery agent, and from the delivery agent to a respective buyer, given a requested order date and the respective buyers address, consisting of the steps including: determining a first potential arrival date of the order at a respective delivery agents location based on the order request date and the buyer's address; calculating the capacity of the delivery agent to ship the order based the first potential arrive date request; and finally, determining when there is sufficient capacity to ship the order to the buyer's address.