Abstract: A security access control insert is provided for installation in curbside mailboxes. The security access control insert prevents tampering or theft of delivered mail. The security access control insert may be sold as part of a mailbox, or as a retrofit kit that may be added to a previously installed mailbox. The security access control insert provides a lockable door with a specific supplied access key. A second access key provided to an authorized mail carrier agency or delivery service may be a master key or passkey that is able to open many different customer mailboxes equipped with the security access control insert. The security access control insert may be formed of sheet-metal construction, aluminum, galvanized steel, or may be formed from molded plastic or composite materials. The security access control insert has a shape that matches the interior cross-section of the mailbox to which the insert will be installed.

Abstract: A security access control insert is provided for installation in curbside mailboxes. The security access control insert prevents tampering or theft of delivered mail. The security access control insert may be sold as part of a mailbox, or as a retrofit kit that may be added to a previously installed mailbox. The security access control insert provides a lockable door with a specific supplied access key. A second access key provided to an authorized mail carrier agency or delivery service may be a master key or passkey that is able to open many different customer mailboxes equipped with the security access control insert. The security access control insert may be formed of sheet-metal construction, aluminum, galvanized steel, or may be formed from molded plastic or composite materials. The security access control insert has a shape that matches the interior cross-section of the mailbox to which the insert will be installed.