What is the policy for OpenPGP key access to non-customers?

What is the policy for OpenPGP key access to non-customers?

What is Zoho's policy regarding data access to customers' OpenPGP keys? I have not yet seen any statements on where the PGP keys are stored within Zoho's systems and who else can access those keys beyond their owners.

Additionally, the closest policy I have seen to who I need is for Zoho Vault where customer data is encrypted by customers before reaching Zoho's systems.

Without this information, customers such as myself cannot risk our PGP keys leaking out.