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 thank-you note got me my first real job. As a newly minted college graduate with no work experience, I was having a tough time finding my first grown-up gig. I thought I’d never get a break until I ...

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 ...