You may also purchase insurance, up to $5,000, when using any of the following services:
If an insured package (article) is lost or is delivered with damaged or missing contents, the Postal Service will reimburse you for the value of the article and the contents at the time of mailing or for the repair costs, up to the applicable amount of USPS insurance. If only the outer packaging is submitted with the claim, indemnity is limited to $50 for COD, $100 for insured, $100 for Registered Mail, and $100 for Priority Mail Express. See DMM 609.3.1.b.
See also exceptions in the “Nonpayable Claims” section of this document.