Mail Highlighter:

This works similar to how you'd use a highlighter in real life. First you need to enable the highlighter. You do this by choosing Text - Highlighter - and then selecting which color you want. You will see your mouse cursor change into the highlighter icon.



Next position the highlighter at the start of the text you wish to call attention to, then press (and don't release) the left mouse button, then drag your mouse from left to right over the text you want highlighted, releasing the button when you want to stop.



Unlike a real highlighter, in Notes you can "un-highlight" by moving over the text from right to left. The text will turn "grey" while you are moving over it, but when you release the mouse button it will be back to normal.