By default, all billing related communications happen to all the admins of your account. You can make a user an admin by following the steps here.


But, by chance you want billing communications to be done to your billing department or if you want the service disruptions/downtime emails to go to your tech department, you can do so by specifying these emails in a comma-separated format (CSV) here: http://my.exotel.in/Exotel/cinfo.