I apply a key vampire rule to give my staff a break from work emails.

After 6 PM staff only get emails from me if the email is invited in. In other words, if they have asked me a question and want an answer, then a response has been invited. But if that invitation for a response isn’t there, I delay email delivery until the next morning.

So like a vampire at the front door, I can’t enter (with email) if I have something to share that is not initiated (and therefore invited in) by my staff. New topics are set to be delivered early the next morning.

From dinner time on, and on weekends, the vampire invitation rule applies for my outgoing emails to staff.