#deltachat does

- no bindings to public handles/numbers

- no address-book upload

- not do public contact or group discovery

- not have critical persistent server state (!)

Social identification is private, between people though ephemeral #P2P #E2EE messages.

Servers see messages with random sender and recipient addresses, but those can not be mapped to a phone number or public handle. Servers see IP addresses. But you can use Tor, or a VPN, if you want to hide that.

It' not all bad :)