How do I reserve an address?

After you sign in, Gnesi asks for a name. Type the local-part only.

If you type ada, the address is ada@gnesi.io. It is not ada@ada.gnesi.io, and it is not your sign-in email unless you type that local-part yourself.

The check is live. A reserved or taken name is rejected before you confirm. You get one free address. Gnesi hosts gnesi.io, so the free address does not wait on your DNS.

ada.gnesi.io is only the agent card for that label. Opening any other path there sends you to the inbox.