I use a program called Automatic BCC by Able Bits (http://www.ablebits.com/outlook-blind-carbon-copy-bcc-email-addins/index...). It is sold at USD 30 and it allows to create your own rules for bcc.
I use a program called Automatic BCC by Able Bits (http://www.ablebits.com/outlook-blind-carbon-copy-bcc-email-addins/index...). It is sold at USD 30 and it allows to create your own rules for bcc.