Sorry, not sorry
If you have anything to communicate with someone, it’s usually best to ask them to talk with you in person so that you can discuss whatever problems you’re having face-to-face. Sometimes notes are not the best approach.
What if you don’t believe me? Take a look at the picture above. Someone wrote a reminder in the office to put food in the hallway trash and to remember to use ketchup. What was her reward for this? Sorry, ketchup has been scribbled on.