Also, E2E encryption >> "the network handles that".

Yeah, well... No.

> We finally have this possibility to use true P2P email.

I mean, email is literally peer to peer.

> Your mail address is derived from your public key: <64-hex-characters>@yggmail

The email address is literally 64 hex characters? How am I supposed to use this on a daily basis?

I have serious doubts who are the target of this or what is the point of this to exist at all. It is literally worse than email.