I did some checking on the USPS website one day, they had some figures on there, they bragged about how many packages they handled every day, then there were figures about how many never made it and were never accounted for, a little quick math and I figured out that the USPS LOSES enough packages to fill a very large aircraft hanger.... every single day 
I used to loan out tools on a european car group and I would use DHL and would include a prepaid return label in the package so all the person had to do was call for a pickup. Fedex has since bough DHL out and while not as good as DHL, they will provide the same service.
This way the items were tracked from my door , out and back and insured, that way, there was no chance that anyone could get in a bind over anything You know who signs for it, and they know when you got it back costs a few more bucks, but takes all the guesswork out.
UPS breaks most of what they handle around here, that one is a crap shoot and nobody ever collects from their insurance, they take the item ' for inspection' and that's the last you ever hear of it no matterr how much you pester them , then ironically, they turn around and sell the broken unit on ebay.
I used to loan out tools on a european car group and I would use DHL and would include a prepaid return label in the package so all the person had to do was call for a pickup. Fedex has since bough DHL out and while not as good as DHL, they will provide the same service.
This way the items were tracked from my door , out and back and insured, that way, there was no chance that anyone could get in a bind over anything You know who signs for it, and they know when you got it back costs a few more bucks, but takes all the guesswork out.
UPS breaks most of what they handle around here, that one is a crap shoot and nobody ever collects from their insurance, they take the item ' for inspection' and that's the last you ever hear of it no matterr how much you pester them , then ironically, they turn around and sell the broken unit on ebay.

( and the driver tried to run up and drop it trhashed side of the box down while I was working on a customer car , but I made her wait till I checked , good thing, but they still never honored the damage claim, just left me holding the bag as usual . ( someone suggested they have conveyers over 30 ft off teh ground at their main sorting facility and stuff goes flying off all the time, and heavy stuff like that leaves divits in the concrete and they just ignore it, even though they have to gather up the pieces to get them back in the carton
)
some of the stuff peope do. it just makes you wonder to no end.