Black Sabbath Artist Presale

Hello! I've been trying to figure out how to get the artist presale for Black Sabbath. I've never done it before but from what I've read online it sounds like you have to sign up for the artist's mailing list and then they email you a day or two before hand.

Has anyone gotten the sale code yet? Or will it maybe come out later? Also if this isn't how the artist presale works, please someone enlighten me because I fear I will die if I don't go to this show lol