Legal Question in Consumer Law in North Carolina

Since you are asking this question, you must not have an attorney. In such case, read the evidentiary rules regarding the admission of legal documents.

Letters have to be authenticated. If the letter is from a creditor, then someone employed by the creditor would need to authenticate it. Whether they can do this by supplying an affidavit (which must be notarized) may be acceptable. Is the creditor willing to do this?

Is this letter even relevant to the issues?

Without looking at the letter or knowing the issues in the case, I am not really able to give better advice.