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. Related articles How do I change my email address? I want to use a different credit card. How do I update my payment information? What happens if I want to cancel and my subscription is based on a promo code I was given? Do I need to have a TV provider in order to watch the content in the HISTORY Vault app? I was given a gift subscription to HISTORY Vault. How do I redeem it?