Use this SR to request the user's work email address if you notice they provided their personal email address. 

Note:  Do NOT forget to change [CLIENT] to the correct client name, twice.

Thank you for contacting GSA Online University End-User Support!

For security reasons, we are only allowed to send information to [CLIENT] Email Addresses. For us to assist you further, do you have access to your [CLIENT] Email Address? If so, can you provide it to us, please? We look forward to your response.

Thank you in advance!