When ups gets an address they say is undeliverable, they send a POST CARD to the BAD ADDRESS!! Even though they have the sender's email on file, and the receiver's, and could send automated emails for almost nothing, they have a system that sends out SNAIL MAIL to addresses that they know are NOT COMPLETE OR INCORRECT.
They wait 5 days for the USPS to NOT deliver the undeliverable snail mail, then return the package to the sender.
This system costs UPS a fortune, makes customers angry and lose confidence in UPS delivery, when a very cheap alternative (or addition) would save them and their customers maybe hundreds of millions of dollars, retain more customers, and get and retain more package traffic.
I've already switched a lot of my business to the usps. They are doing a much better job these days, and have cheaper prices for faster service than ups ground.
Monetary Loss: $10.