I think you currently get an email for being prodded.
What I'm wondering about this is should there be a single option to either receive emails or not, or individual options to receive them for specific things.
Possible things to be emailed about:
- Game starts
- Day starts
- Day ends?
- You have an unconfirmed signup and there are enough signups to start if you reconfirm
- New message thread
Maybe for Forum and Message threads you could subscribe for in-site notifications or for emails or both? Maybe in this case emails could be sent once a Day listing all the thread you've subscribed to for email notifications that have posts?
Maybe for some notifications (not Forum posts but maybe Message posts) it could check how long it's been since you visited the site and email you if it's been over say a week (and you haven't already received such an email since then)?
Obviously I still don't have a clear idea of the best way to do this, which I guess is why it hasn't been done yet. Maybe I should just start with game starts.