[dghlsakjg]

With mail, the only information that is verifiable is the address that received the mail.

The return address can be made up. Although the general area it is sent from is recorded in the form of zip code.

The contents of the letter are also not known.

So even if that info got out, there’s really not much information beyond the fact that mail was received, and we probably know who sent it.

Thats a world of difference from cryptographically signed transactions between known parties with known amounts.

[rmbyrro]

There's a reason why the saying goes as "follow the money" and not "follow the mail". Think about why and you'll understand why CBDC is Orwellian worst nightmare.