Thank you hyoung for your feedback; we always appreciate hearing end user opinions. It is unfortunate that you have experienced difficulties with these mailboxes and we hope you will continue to give us the opportunity to work with you on your incidents.
While our packaging has been thoroughly tested with various carriers, and we strive to produce quality mailboxes, we will address the matters you have outlined with our quality department.
Vertical mailboxes such as this one have been available in the marketplace for well over 30 years and were designed to USPS specifications for indoor installation written at that time. Since then, new USPS specifications have been written addressing liability as you mention, as well as more stringent security for the mailboxes themselves. These specifications (Standard 4C or STD-4C for short) were not retroactive to the older mailboxes like these verticals (known as Standard 4B+), but does apply to new equipment introduced because of this specification. USPS states that vertical mailboxes should only be used for replacement purposes and not for any new delivery points because of these reasons.
If you would like to discuss your incidents further, please do not hesitate to contact us at 800-275-1747. Thank you again for your feedback!