In November 2011 you can forward a BCC of your outgoing and incoming Gmail to another single address

A client requested me to set up his Google Apps users so that all their outgoing and incoming email is BCC'd to his account. The terminology we've been using is that we'd like the mail to be forwarded to him, or copied to him, the president or manager of the company.

A Google Apps tech support representative gave me an idea that he eventually disavowed because it was unstable and unsupported. However, given certain restrictions, the idea does indeed work. In a nutshell, the idea is that you have to do the following:

1. Set up a filter to apply a label to all your outgoing mail (From: tom.dontspamme.haws@gmail.com gets the label "outgoing")
2. NOT under filters, but under forwarding, enable the forwarding of all mail to the single targeted address.

Restrictions:

1. If you try to do this solely using filters, the forwarding will not happen. You must enable forwarding of all mail to the intended recipient (the "manager") from the forwarding tab.
2. You can't forward to multiple addresses this way unless you use the primary recipient address to then split the mail into many destinations.
3. All mail both incoming and outgoing will be forwarded.