Postal Explorer > IMM Issue 35 - International Mail Manual > 4 Treatment of Outbound Mail > 420 Shortpaid and Unpaid Mail > 423 Shortpaid Mail
Return shortpaid mail to sender. Use stock rubber stamp R–1300–230, Returned For… Additional Postage. Enter the amount of the deficiency.
Shortpaid First-Class Mail International and postcards with no return address must be forwarded to the exchange office. Imprint with stock rubber stamp R–1300–4, Postage Due…Cents. Do not enter the amount of the deficiency.
Exception: For shortpaid First-Class Mail International and postcards to Canada having no return address, enter double the amount of the deficiency.
Shortpaid parcels with or without a return address must be stamped Postage Paid and forwarded without delay to the appropriate exchange office. Immediately notify the sender of the action taken and request payment of the deficient postage.
Note: Parcels must not be held for payment unless the deficiency can be obtained from the sender without delaying the dispatch of the parcel.
Shortpaid Express Mail International shipments must be stamped “POSTAGE PAID” and forwarded without delay to the appropriate exchange office. Collect the deficient postage from the sender.
Note: Express Mail International shipments must not be held for postage due payment unless the deficiency can be obtained from the sender without delaying the dispatch of the shipment.
When computing the postage due on items that are returned to sender for insufficient postage, allow a credit for the postage already paid.
Originating bulk mail centers must check for shortpaid parcels addressed to Canada and Mexico. Sectional centers and other intermediate offices, however, should not attempt to verify postage payment on parcels.
