only send email updates when you are not logged in
If your party is playing online together at the same time, you still receive email updates of what your party is doing. If I'm logged in to witness it, email is unnecessary. It would be nice if you only received email updates when you are not logged in.
Most email updates are only sent if you haven’t been active in the game within the last 15 minutes, which has a similar effect. There are still a few that are sent no matter what, such as the notification we send when you kick off a quest. We’ll look into making those work the same way as the others when we have a moment.