Is there a way to record b[ounced] messages in sentmail?

[Chris Green]

I occasionally us b[ounce] to resend a message to a different
recipient, e.g. I just sent a message to an estate agent and got an
'out of office' reply so I b[ounced] it to another person at the same
estate agent.

It would be nice if the b[ounced] message was recorded in my sentmail,
it isn't at the moment.

Is there any setting to make this happen?

-- 
Chris Green