A system and method are presented that utilize an unaltered application programming interface (API) provided by a shipping aggregator to provide a customer-facing aggregation service. Standard shipping aggregator APIs are unable to accept customer-specified ship-from addresses and customer-specified package details. This is especially true when using standard e-commerce platforms. Custom integration programming operates between the e-commerce platform and the unaltered shipping aggregator API in order to provide customer-facing aggregation services. Locker locations also form part of the system, allowing customer-facing aggregation using carrier agnostic lockers for ship-from and ship-to locations.