They don't even give slips to us in my building. We have fancy lockers in our mailroom that the USPS worker dutifully uses.
And then puts the key in someone else's mailbox. So you have to wait for someone to check their mail and then hope they're nice enough to notice the package that arrived was not for them.
UPS, FedEx, etc, are allowed (if the resident signs a waiver) to leave packages with building management in their package room, after which point the night doorperson will email you when your package is ready to be picked up.
And then puts the key in someone else's mailbox. So you have to wait for someone to check their mail and then hope they're nice enough to notice the package that arrived was not for them.
UPS, FedEx, etc, are allowed (if the resident signs a waiver) to leave packages with building management in their package room, after which point the night doorperson will email you when your package is ready to be picked up.
I will choose non-USPS every single time I can.