We inquired to CoxHSI.Services@cox.com in March, with no reply after our followup request for information 3/28/2016.
Repeated that last message today 7/15 and got -
Delivery has failed to these recipients or groups:
Cox eCare HSI (firstname.lastname@example.org)
The recipient's mailbox is full and can't accept messages now. Please try resending this message later, or contact the recipient directly.
The following organization rejected your message: CATL0EXCH06.CORP.COX.com.
Also - 2 days ago Cox scrambled the neighborhood WAN IPs, now internet reconnects every 30 minutes - of course stopping everything.
This for almost $900 per year (constantly escalated) for supposed (but spotty) "high speed Internet".
Not a happy camper!