If you ship to Canada using USPS, you can prepay customs on behalf of your customers—thus creating a smoother customer experience. Replace surprise charges or returned goods with increased customer satisfaction. The services that now allow you to prepay customs are USPS First Class Mail International® (FCMI), USPS Priority Mail International® (PMI), or USPS Priority […] The post ShipEngine Introduces DDP for Shipments to Canada appeared first on Shipstation API .