When was the last time you received a handwritten thank-you note? In our world of instant messages and voice notes, the people who still take time to write thank-you notes by hand are becoming increasingly rare. After observing friends, colleagues, and strangers who maintain this practice, I’ve identified nine traits that handwritten note writers consistently possess. People who write thank-you notes don’t just maintain surface-level relationships. The next time you receive a handwritten thank-you note, pay attention to the person who sent it.