cheapest way to mail a large box

cheapest way to mail a large box depends on the size, weight, and destination of the package. USPS is often the most affordable option for mailing large boxes, particularly with its Priority Mail and Priority Mail Flat Rate services. For heavier items, FedEx Ground or UPS Ground can offer competitive rates, though they may charge based on both size and weight. Additionally, comparing prices through shipping calculators on carrier websites can help determine the best price for large box shipments. For very large or oversized packages, freight services may be necessary.