If you want to email e-bills with CC and BCC for a particular client file. You will need to create a separate email template for each file and assign the following email template to the file.

Step #1:

In esiLaw 360 go to Lists -> Templates - And create a new email template.

Step #2:

In email template under "Subject" select the option “Send copy to email below” for CC or BCC

Now your new Email Template will have the options for CC and BCC.