Yes. By default, all notification messages go to all admin users in your account, both as in-app messages and via email, but you can request any notification messages be disabled, in-app or by email. Just contacting Support and tell them which notifications messages you want to stop and through which channels.
See Ringba Notification Messages for more information about notification messages. See Notification Message Reference for a complete list of notifications you can turn off.
Note: You may receive other kinds of emails from Ringba beyond email notifications. Stopping notification messages does not stop other kinds of emails.