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 realize that the concept of mailing a handwritten thank-you note after a job interview sounds really old-fashioned. But I still believe that sending such notes – even to an avatar – conveys more ...