"User already exists" or "This email already exists" error when inviting new users

In Cloudinary, it's not possible to use a single email address on multiple accounts. Attempting to add a user to your account if the specified email address is linked to another existing Cloudinary account will display an error message saying "Has already been taken" or "This email already exists".

Before the user can be added to your account, they will need to change the email address associated with their existing account, even if that account is disabled.

Several options can be considered to fix this error:

1. Ask the user to update their existing Cloudinary account to use another email address (regardless of whether they want to keep that account active or disable it).

   • If their email service supports aliases, the user can add an alias (for example: username+old_cloudinary@domain.com), or they can update the email to a personal email address.

2. Ask Cloudinary support to permanently delete the "old" account associated with the email address, and any remaining files - allowing the email address to be used again. 
   • Please ask the user to open a support request and request that the account be deleted.
   • We'll require the cloud name and the last four characters of the API Secret for verification purposes. The API Secret can be found on the "Getting Started" page under the "View Credentials" section, or on the "API Keys" page of the account settings. 

We currently do not support maintaining an account just to "hold" an email domain to prevent other accounts from being created with email addresses on that domain.