Acknowledge the loss and name the deceased. Please accept my heartfelt condolences during this incredibly difficult time.Here are 10 tips on how to write a condolence letter and what to say and what not to say. Please accept my deepest condolences for you and your family's loss. I am thinking of you and sending my love. I love you, and I'm sending my condolences. My family and I are so sorry for your loss. Keep the letter as brief and as short as possible. "I feel so honored to have known your mother. I will never forget when (include a memory).