Forwarding to other e-mail address.

I posted this messages and have got notification of a reply. Unfortunately
when I click on the notification all I get is a blank page. So I will try
again

I was wanting to know how to send a copy of an e-mail direct to another
address (when sending) using BCC without having to enter it each time. I can
see how you do it under filters but that just puts into CC and shows the
address

Thanks to the person who replied in the first instance