Why would you need a USPS-approved mailbox?
USPS-approved mailboxes adhere to the standards set forth by the US Postmaster General. In order for mailboxes to be approved by the Postmaster General, the manufacturer must demonstrate a sound manufacturing process and design products that adhere to a specific set of standards.
Installation of a USPS-approved mailbox is easy and only requires an exchange of the mailbox itself while re-using the old post.
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