Sympathy cards are greeting cards specifically designed to express condolences and support to someone who is grieving the loss of a loved one. These cards often feature comforting messages and can include personal notes to show care and understanding during a difficult time. Typically sent after a funeral or during a period of mourning, sympathy cards serve as a tangible reminder that others are thinking of the bereaved. They can help provide emotional support and convey feelings that may be hard to express in person, making them an important gesture of compassion.