How do I edit or cancel my mail forwarding request? To edit or cancel a mail forward request, contact us directly and an Updater representative will guide you through the process. Click here to get in touch. Related articles Where can I find my USPS confirmation number? How do I update my address on my Updater account? How do I contact customer service? I received a email saying that my unit number was invalid. How can I edit this? What date should I select as my start date?