404. Providing the information is voluntary, but if not provided, we may not process your transaction. We do not disclose your information to third parties without your consent, except to facilitate the transaction, to act on your behalf or request, or as legally required. This includes the following limited circumstances: to a congressional office on your behalf. to financial entities regarding financial transaction issues. to a USPS auditor. to entities, including law enforcement, as required by law or in legal proceedings. to domestic and international customs relating to outgoing international mail pursuant to federal law and agreements. and to contractors and other entities aiding us to fulfill the service (service providers).</p> <p>