I've seen it before several times, which is how i signed up -
but in perusing their website this is the closest I can presently find below-

if somebody has a better link for ppl to sign up to get the emails to those who sign up please provide it- i cant you sign you up because I dont work for Zion and they have not delegated that authority to me-sorry


https://www.zionoil.com/contact-us/