How do I change my HISTORY Vault sign in email? To update the email address you use to sign in to HISTORY Vault, please send us a message and include both the email you are currently signing in with and the email you would like to change to. Related articles Do I have to register in order to use the HISTORY Vault app? How do I cancel HISTORY Vault? I'm not sure where I originally subscribed to HISTORY Vault. How do I find that? I want to use a different credit card. How do I update my payment information? How can I contact HISTORY Vault's Customer Support team?