[pmmail-list] Ideas on how to BCC all outgoing email to a fixed address

[John Bridges]

I've started using Gmail as a duplicate way to read/search email.

All incoming I setup my ISP to send a duplicate to my Gmail account

For all Outgoing mail I write in PMMail, I would like to BCC the message to
my Gmail account.

The problem is, I don't see an obvious way to do this. I can use a outgoing
filter to Bounce the message, but the headers get messed up (the To address
becomes my Gmail account instead of the original addressee).

Any ideas on how to add the BCC header to outgoing messages?  Will I have to
run an external program as part of the filter?