Can additional insurance be purchased at the window if it has already been purchased online?

The correct answer indicates that once insurance has been purchased online for a package, it cannot be changed. This policy is in place to maintain the integrity of the transaction and to prevent any potential complications that could arise from altering the coverage after the initial purchase.

When insurance is purchased online, it is tied to the specific package and its details. Allowing changes at the counter could lead to discrepancies, such as the need to update shipping details or address possible claim disputes that could arise later. Therefore, the USPS enforces a strict policy that once insurance is set at the time of purchasing the label online, it remains fixed for that shipment.

In contrast, other options suggest conditions under which changes could be made or introduced additional fees for modifications, which is not aligned with USPS policy on this matter.