Are you able to send Surveys and Mailings to an alternate email address?
Sending Surveys or Mailings
Oracle B2C Service, All versions
In the case of Surveys and Mailings, the current product functionality is designed to send only to the primary email address. The alternate email address will only be used for service mail if the primary email address is bounced.
Note: Surveys and Mailings will not be sent to CC or BCC addresses.