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IMM Issue 36 - International Mail Manual >
2 Conditions for Mailing > 210 Global Express Guaranteed > 214 Service Guarantee
The Postal Service guarantees delivery within the service standards specified in Publication 141 or the sender may be entitled to a full refund of the postage paid. For the purpose of the postage-refund delivery guarantee, the date and time of delivery, attempted delivery, or availability for delivery constitutes delivery.
Total transit days for Global Express Guaranteed service for non-document items may be affected by general customs delays, specific customs commodity delays, holidays observed in the destinating country, and other factors beyond the Postal Service’s control. See the Terms and Conditions on the Global Express Guaranteed Air Waybill/Shipping Invoice or in Publication 141 for details.