FedEx Smartpost takes longer to deliver packages because it uses a combination of FedEx and USPS services, which can slow down the process. This method is cost-effective but not the fastest option available. For quicker deliveries, consider using standard FedEx services or FedEx Canada for shipments within the country. Smartpost is ideal for people looking to save on shipping costs, but patience is required. It's a trade-off between cost and speed.