what is the cheapest way to send a heavy package

what is the cheapest way to send a heavy package depends on the weight, size, and destination of the package. USPS offers competitive rates for heavier packages, especially through its Priority Mail and Retail Ground services. For packages weighing over 70 lbs, UPS and FedEx also offer ground shipping services that may provide better pricing. Comparing prices across different carriers using a shipping calculator or third-party services can help identify the most affordable option for sending large items.