Chris Fenning explains why every request needs three things: who does it, what it is, and when it's due. Without these, people get confused about responsibility and deadlines. He shows the fix: name the person, name the task, name the date.
Chapters
How to write great emails, tip number 9: your requests and actions should say who will do what by when. If you're asking someone to do something in an email, or you're giving them an action as a follow-up from a meeting, you need to make it clear who is going to do the action, what that action or request is, and when you need it. If you don't do this, people may not understand exactly who's responsible for the request or specifically what that request is. And if they don't know the timeframe, if they don't know when it's needed, they're not going to necessarily deliver it when you want or need that to be done. So when you're writing an email, how do you do this? Well, you call out the actions and requests with a clear identifier, and then you say, James, I'd like you to deliver this report by Wednesday. Who will do what and by when? So if you want to write great emails, make sure that your requests and actions say who is going to do what and by when.