Create a BCC rule

You can create a rule to automatically CC someone when sending a message. Unfortunately an automatic BCC is not possible although often preferred over a CC.
Fortunately programmatically it is possible although not supported by Microsoft. For more info;
http://www.outlookcode.com/d/code/autobcc.htm

If you are not comfortable doing this manually by code you can also use a supported add-in from SperrySoftware called Always BCC
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