what’s express mail refers to a fast shipping service offered by various postal and courier companies that guarantees quicker delivery times compared to standard mail services. Express mail services are commonly used by businesses and individuals who need to send time-sensitive packages or documents. These services can deliver within one to two days, depending on the destination. For e-commerce businesses, offering express mail options can be a key selling point, especially for customers who require urgent deliveries. However, businesses need to consider the higher costs associated with express mail when pricing products and shipping services.