ProtonMail Professional Accounts allow for the creation of sub-users for your organization. These sub-users can be either private or non-private.
By default, all users are non-private, which means that their emails can be read by any of the administrators of the organization. This might be desirable for employee oversight and compliance reasons. Non-private accounts are only accessible by administrators of your organization, it is not possible for ProtonMail to read the emails of ANY user of your organization, including also the non-private users.
During the user creation process, or afterwards through the Addresses/User tab within the settings, it is possible to set a new user as a private user. Private user’s messages are only accessible by that user and nobody else.
How to set a user as Private?
When creating a new user, select the Private button shown in the module:
For existing users, you can change them to a private user by selecting Make Private in the drop down next to the users information in the Addresses/Users Tab within the Settings.
It is important to note that changing a non-private account to private is a one way operation. It is NOT possible to make a private account non-private again. To do this, you would need to delete the account entirely and recreate it.
If a private user loses or forgets their password then they will need to reset it using their recovery email address. The administrator cannot change their password for them.
Below are some additional articles to assist you while setting up ProtonMail Business accounts:
Step 1: Setting up Your Domain(s)
Step 2: Creating your Organization
Step 3: Setting up User(s)