E2EE will be available for paid accounts on the account level and available to everyone in any paid accounts, including both free and paid users. However, free accounts cannot schedule or start ad-hoc E2EE meetings.
As of today, customers who purchased RingCental Video plans may have both free and paid users in the same account. Free and paid users will be subject to different service limits. Please refer to RingCentral Video Plans and Pricing
The account administrator will have to specifically add free users to the account as internal users. That being said, it is the account administrator’s responsibility to validate each user's identity before adding them as an internal user.
Note: E2EE will be available for free users only if the users are added by the account administrator to any paid account.