Can I ever see my confidential letters of recommendation?
In accordance with the Family Educational Rights and Privacy Act of 1974, Interfolio maintains the confidentiality of all closed letters of recommendation our file holders store with us. We follow strict guidelines for receiving and mailing all closed letters of recommendation to ensure that confidential documents stay that way. Account holders are notified when we receive letters of recommendation on their behalf, and have the ability to select it in a mailing to a potential graduate school or employer. Account holders will not, however, have the ability to view the document at any point in time.
That's the answer given by Interfolio's HelpCenter.