Economy express delivery is relative to standard express delivery. For the non-urgent delivery needs of large customers, the price is cheaper than the standard express delivery, but the arrival time is generally later than the standard express delivery 1 to 5 days. It used to be called email.

Economic express service targets include: scattered customers who sell products on e-commerce platform and initiate electronic orders of "using economic express" on e-commerce platform, agreement customers who sell products on e-commerce platform and have a certain scale, and batch commercial customers. The type of incoming message only accepts items.

MS economic express products mainly provide stable time-limited goods delivery service for B2B, B2C and C2C scale customers and commercial customers of e-commerce. Express delivery is mainly aimed at the fast-growing e-commerce market, including: clothing, shoes and bags, jewelry and clocks, cosmetics, outdoor sports, digital products, small household appliances, household items, food and health products, maternal and child products, automobile decoration, books, audio-visual instruments and other industries suitable for delivery.