Acknowledge the loss. Keep the letter as brief and as short as possible."May your memories and the love of your family and friends bring you comfort. I'm so sorry you lost your xxx" and use the person's name. Please accept my condolences on the passing of your loved one. That they took the time out of their busy lives to write us a letter filled our hearts. Write as quickly as you can. An appropriate signoff could be something like "with sympathy", "with caring thoughts" or "our sincere sympathy". The Beneficiary must complete the Beneficiary Claim Form in full and return it to you. Please accept our condolences on your recent loss.