Manners make the world work. They're not only based on kindness but also efficiency. When people know what to do, the world is smoother. When no one knows what to do, it's chaos.
A real thank you does not come by e-mail. They come in the mail in an envelope. And what comes out of an envelope is a beautiful thing to touch and to handle and to pass around for everyone to read.
Good manners are cost effective. They not only increase the quality of life in the workplace, they contribute to employee morale, embellish the company image, and play a major role in generating profit.