And then there’s measuring success. With Nascar’s Thank You, Fans campaign, clearly, the numbers — engagement, content consumption, sweepstakes entries, etc. — are one indication.

When she travels, she buys 10 thank you notes for a few dollars and slips them into her carry-on luggage. She gives them to the bell hop, the man who carries the bags through the airport, or the ...

In fact, it’s one of the easiest things you can do to increase your mental health. But if you can’t remember the last time you sent a real thank-you note, a recent study may explain why.

The thank-you note was de rigueur, both for friends and family, as well as business. A formality of tone and proper etiquette were necessary, as were a careful selection of paper, envelope, and ink.