Cc and bcc on an envelope

cc / bcc in settings are plain addresses that are told about the envelope but never asked to sign — no link, no token:

"settings": {
  "documentId": "...", "subject": "...",
  "cc": ["sales@acme.example"],
  "ccNotifyOn": "completion"
}

ccNotifyOn / bccNotifyOn is "none" (default), "completion" (one email, with the signed PDF attached), or "everything" (also the initial send and every reminder). Every address on either list gets a mail of its own, so nobody sees the other addresses: cc and bcc behave the same, and both are kept so a request written for another service still fits. Separately from cc/bcc, your organisation is told when an envelope completes, at the addresses set in Settings (Notifications), unless that notice is switched off there.

Recipe form: Keep someone in the loop without asking them to sign. Full envelope settings: Signing on its own.