After the above steps, you can send your emails as usual with your
email address registered on bbj. Your email address will be
converted to a random email address when your email is received.

The receiver can send an email to your converted address only
once. If the receiver tries to send a second email to the converted
address, it will fail because the converted address becomes unknown.

The converted random address for the receiver of your email is valid
only once; however, you can use your email address registered on
bbj as many times as you would like as an ordinary email address.

For details, please see the introductory email which will be sent to
you when you press the <Register> button.