[standalone@localhost:9999 /] /subsystem=mail:read-resource-description(recursive=true)
{
    "outcome" => "success",
    "result" => {
        "description" => "The mail subsystem",
        "head-comment-allowed" => true,
        "tail-comment-allowed" => true,
        "namespace" => "urn:jboss:domain:mail:1.0",
        "children" => {"mail-session" => {
            "description" => "Defines the mail sessions.",
            "min-occurs" => 1,
            "model-description" => {"*" => {
                "description" => "Mail session configuration",
                "head-comment-allowed" => true,
                "tail-comment-allowed" => true,
                "attributes" => {
                    "jndi-name" => {
                        "description" => "JNDI name to where mail session should be bound",
                        "type" => STRING,
                        "required" => true,
                        "access-type" => "read-only",
                        "storage" => "configuration"
                    },
                    "debug" => {
                        "description" => "If this is true the MailSessionConfiguration will be set to debug mode",
                        "type" => STRING,
                        "required" => false,
                        "access-type" => "read-only",
                        "storage" => "configuration"
                    },
                    "smtp-server" => {
                        "description" => "The address of a SMTP Mail Server",
                        "type" => STRING,
                        "required" => false,
                        "access-type" => "read-only",
                        "storage" => "configuration"
                    },
                    "imap-server" => {
                        "description" => "The address of an IMAP Mail Server",
                        "type" => STRING,
                        "required" => false,
                        "access-type" => "read-only",
                        "storage" => "configuration"
                    },
                    "pop3-server" => {
                        "description" => "The address of a POP3 Mail Server",
                        "type" => STRING,
                        "required" => false,
                        "access-type" => "read-only",
                        "storage" => "configuration"
                    }
                }
            }}
        }}
    }
}