ccing Sending a message indirectly? Sending a duplicate email to: Abbr Providing with a transcript, possibly Looping in, online Looping in on an email Keeping in the loop, electronically Informing secondarily, for short Sending a duplicate, for short Sharing a memo with, briefly Keeping in the loop, in a way Sharing mail with, in a way Keeping in the loop, briefly Sharing a memo with Sending an e-mail copy to