These days some EMS parcel were returned from USA to us. This is because over retention period. Retention period is just 5 days in USA. (In France it is 2 weeks.) USA’s period is extremely short.
Customers in USA need to pay attention to retention period. If parcel were returned to us, they need to pay shipping fee again. Post Office never refund money.
Regulation of USPS https://pe.usps.com/text/imm/immc7_023.htm
766 Retention Period
766.1 General Procedure
Post Office facilities must hold international mail items for pickup by the addressee for 30 days. However, inbound Express Mail Service items must be returned to sender after 5 days, unless the sender specifies fewer days on the piece.
766.21 Refused, Undeliverable, or Unforwardable Item
An item refused or known to be neither deliverable nor forwardable must be treated as undeliverable immediately.
766.22 Request for Return
Items enclosed with a sender’s request for return within a specified period may be held for the period specified, not to exceed 60 days.
766.23 Items Conditionally Refused by Addressee
An item conditionally refused by the addressee because of the duty assessed (see 713.233 for the procedure when the addressee asks that the U.S. Customs Service reconsider the duty) is held until the customs office gives a decision on the protest. If no decision is reached within 30 days, the customs office should be asked to expedite its decision.
766.24 Items Returned From Customs Custody
An item returned from customs custody with advice that the addressee has not complied with required customs entry procedures must be treated immediately as undeliverable.
766.25 Request for Delivery to Alternate Addressee
An item bearing the sender’s request for delivery to an alternate addressee must be held 15 days at the disposal of the first addressee and 15 days at the disposal of the second. If the alternate addressee is at another Post Office facility, the item is forwarded subject to 764.1, and the 15–day period begins from the day of receipt at the second office of address.