http://csmail3thcskmzvjicww3qdkvrhb6pb5s7zjqtb3gdst6guby2stsiqd.onion/about
A: Since cs.email doesn't require account registration, anyone who knows the Inbox ID may have access to that inbox. So it's best to use a random address. To add protection, you can use the Scrambled Address feature. A Scrambled Address can only be know if the Inbox ID is known and you cannot use an Alias as an Inbox Id.