There are services that allow you to send paper letters via the Internet, even by e-mail. I thought that it would be possible to develop this idea a little differently, and create a service for the delivery of parcels and wrappers indicating only the recipient's e-mail address.
It may look like this
You pack the parcel
Go to the site of the service, register the parcel, specify the recipient's e-mail
A courier arrives, picks up a box *
An e-mail is sent to the recipient on behalf of the service that a parcel has arrived in his name, and it can be picked up there, or you can indicate your postal address, and the parcel will be sent to it
* - It is possible that the sender sends the parcel to the delivery service on its own, so as not to pay for the courier service.
Why all this is needed - it will be possible, without leaving home, to send a package to a person, from whose data only e-mail is known. ')
The advantage is that the recipient may not disclose his true physical address to the senders; only the delivery service will know it and keep it secret.
The disadvantage is that until such a service becomes known, it will be perceived as a phishing attempt.