Make sure that your retention program covers it adequately, especially that you can retrieve and delete.
The last thing you want is a subpoena for "everything associated with" and realize that the bank does not have the capability to search for pieces of paper and never deleted anything for the past 10 years. Also, it can get very voluminous very fast. Define what you need to keep. E-mail from CEO to all staff will be in everyone's retention, along with all of their responses to everyone and attachments.
Integrity. With it, nothing else matters. Without it, nothing else matters.