What must a sender do to ensure mail continues to reach a customer at their new address?

To ensure that mail continues to reach a customer at their new address, the sender must fill out a forwarding request. This process typically involves completing a form that notifies the postal service of the new address. Once the forwarding request is processed, the postal service will automatically redirect mail sent to the old address to the new one for a specified period, ensuring that important communications are not lost during the transition.

This method is the most reliable and efficient way to maintain mail delivery, as it places the responsibility of forwarding directly onto the postal service, which is equipped to handle such requests. By properly completing the forwarding request, the customer can ensure that all mail intended for them is redirected seamlessly, without needing to manage the physical forwarding of mail themselves or directly communicating with local carriers.