• What is the cheapest way to ship your package you asked? Well, FedEx, DHL and UPS promise certain benefits in exchange for their service fees. All provide point-by-point tracking and on time delivery money-back guarantees for their international shipping services. The only Postal Service option that includes those perks is the most expensive, Express Mail, which offers overnight delivery to most domestic locales but don't get your hopes up, their express international service is not even in the same league