How To Write A Letter To Be Notarized . The document or letter which has to be notarized must be unsigned. A notary public is a state official who is licensed to witness and verify signatures. Notarized Letter Format Template Business from nationalgriefawarenessday.com They are unlikely to make a copy of your document. Indicate the document’s title at the top center position. Every state has different requirements for a notary's stamp and signature;