What even is the point

Scheduling correspondence generally falls into one of a couple categories:

1. This message contains information you don't want them to have until after an event. Raises, Layoffs, Reorgs
2. It's 2am and you don't want to bother them at this hour. (more important for Slack)
3. They're not in our timezone and you want it to hit the box when they're fresh to work on it. You don't want them to start a sprawling project at 4:30 on a Friday.
4. It's the weekend and there's no reason for them to worry about it until Monday.