They don’t ask for one on signup. I just signed up recently while using Tor on Tails, and was not required to provide an email for any reason. The only thing that happens is you get a warning in the account panel saying you won’t be able to recover your account if you lose the recovery codes.
I wouldn’t trust them not to store the initial one as well tbh. Nothing technically stops that and it’s in their interests.
They don’t ask for one on signup. I just signed up recently while using Tor on Tails, and was not required to provide an email for any reason. The only thing that happens is you get a warning in the account panel saying you won’t be able to recover your account if you lose the recovery codes.