Keep it short and dont bury the lede

Once you've identified what you need to say, get to the point quickly. People are always pressed for time, and they will appreciate your brevity.

Need more convincing? Stop and think about how frustrated you feel after reading an email that's three times longer than it needs to be, with the main points buried way at the bottom. It's a waste of time and energy, right?

Don't make your audience go through this - be brief.