The Default view of the e-mail template in SharePoint 2010 does not allows BCC fields. It is possible to add BCC fields for e-mails in your workflow. To activate this you have to fall back on a short trick: Insert your planned BCC recepient into the CC field of the e-mail. In SharePoint Designer navigate to the folder that holds the newly created workflow files (usaually it is stored under /sitename/workflows > navigate to “All files” then “Workflows). Open the XOML file of the workflow with Notepad (use right-click). Then search for the CC and BCC field and change CC with BCC (you will find them in the :EmailActivity node). Save the file, reopen the workflow, doublecheck the empty CC field, republish, thats it!
