✔ 最佳答案
如果問候別人關於 她/他 的心情, 用regard比較好D,
e.g. regard to -> it means you pay attention to or thought and care for somebody
雖然我們用"best regards"用於信的結尾, 但用於標題可表現你出於關注
e.g. "a deeply regard about you", "send a message with regard", "with kindly regards"
greeting通常用於"a message of good wishes for somebody" or "you say something to greet 祝賀 somebody"