Business Insider asked etiquette experts when it's appropriate to send a handwritten thank-you note. They said a note is essential after staying at someone's home or receiving a personalized gift.

A good rule of thumb is to write a thank you note for gifts when you haven't been able to thank the giver in person. That ...

DEAR MISS MANNERS: An elderly friend died last year after a long decline. I was very fond of her, as she was of me, and I visited her regularly after she moved from her home to the care facility where ...

I grew up being told the importance of writing thank-you notes. My children began resisting the task, seeing it as tedious and unnecessary. Now, they must write thank you notes before they are able to ...