Is EMS economic express delivered directly at the doorman or by phone or SMS?

What kind of service is wulun? Usually call first, but it doesn't rule out that you can't send short messages to your doorman by phone, especially familiar customers, especially units. Economy is only the mode of transportation and delivery of express delivery, so it doesn't matter, so he still sends it, but every express delivery company will have several irresponsible couriers, so it can't be generalized.