APPSMITH_SIGNUP_DISABLEDshould be set to
trueto disable signing up of new users. When set, the following facts hold:
APPSMITH_SIGNUP_ALLOWED_DOMAINScan be used to restrict signups to emails belonging to only a specific set of domains. This field takes a comma-separated set of values.
APPSMITH_ADMIN_EMAILScan be set to a comma-separated list of email addresses, that will always be allowed to sign up, irrespective of the above two environment variables.