Your lightning address

A lightning address looks like an email address and works like an account number: anyone can send to it from any Lightning wallet.

On GetZap it is the same local-part as your NIP-05. LNbits LNURLp already created it when the name was activated.

kk@getzap.me
https://getzap.me/.well-known/lnurlp/kk

Nostr clients read lud16 on your profile and zap that address. NostrFeed does this the same way it does for ln.nostrfeed.com.

There is no SMTP. People send sats and a comment, not mail.