There's no secret formula for how to write a thank-you note, but these tips from etiquette pros will help you get started ...

According to Fitzpatrick, thank-you notes should be sent in a variety of scenarios. A thank you note is showing appreciation and acknowledgement of either something done for you or given to you.

Handwritten Notes Are Still the Best Way to Reaffirm Your Customer Relationships. Here’s How to Write a Good One There’s nothing like a personal note written with real ink on paper.

You can get sticky notes on your Mac through the Stickies application, and use it to write and edit notes to create reminders on your desktop.