Login
The login page provides authentication to access the mailserver-admin interface. Users can authenticate using either regular email address and password credentials and OAuth2, depending on the configuration.

Authentication Methods
Local Authentication
By default, users authenticate using their email address and password configured in the mailserver.
OAuth2 Authentication
OAuth2 authentication can be enabled to allow users to log in using an external identity provider. When OAuth2 is enabled, a login button appears on the login page. Currently, this is only useful for granting admin rights to users.
For OAuth2 configuration options, see mailserver-admin configuration.